aqueous dispersion for styling hair, process for preparing aqueous dispersion, composition, method o

专利摘要:
COMPOSITIONS AND DISPERSIONS CONTAINING PARTICLES COMPREHENDING A POLYMER The present invention is directed to a composition containing: an aqueous dispersion comprising (a) particles with a particle size distribution based on the volume with peaks in the range equal to or greater than 1 μm around 100 μm, in which the particles comprise an oil gelling agent comprising a styrene block copolymer, and a grease substance selected from a wax having a melting point above 35 ° C, an oil and mixtures thereof; (b) a surfactant mixture comprising a nonionic surfactant and an ionic surfactant; and (c) water; and a vehicle. The aqueous composition and dispersion are capable of providing benefits to various substrates, for example, keratinous substrates such as skin and hair.
公开号:BR112016021662B1
申请号:R112016021662-8
申请日:2015-03-10
公开日:2021-01-05
发明作者:Jean-Thierry Simonnet；Bradford Joseph Pistorio；Charles Michael Sanford Shaw；Jim Mitchell Singer
申请人:L'oreal；
IPC主号:

专利说明:

AREA OF THE INVENTION
[0001] The present invention relates to aqueous dispersions, compositions containing such dispersions and methods of using these dispersions and compositions on various substrates. More particularly, the aqueous dispersion comprises particles, a mixture of surfactants, comprising a nonionic surfactant and an ionic surfactant, and water. BACKGROUND OF THE INVENTION
[0002] Consumer products such as cosmetic, personal care, and household products, as well as pharmaceutical and industrial products, employ ingredients that allow these products to form a film or coating on various substrates such as keratinous substrates (eg, hair and skin), hard surfaces (eg, wood and metal), and other non-keratinous substrates (eg, fabrics and articles). The ingredients that help to form a film or coating on the surface of a substrate can be chosen from a variety of raw materials such as waxes, polymers, resins and oils. At the same time, products that employ these ingredients are designed to provide certain desirable properties such as shine, water resistance, transfer resistance, scratch resistance, color and a glossy appearance to a surface.
[0003] In particular, waxes and oils are highly desirable in cosmetic and personal care products as well as in household / industrial products in order to provide properties such as shine, smoothness, and dripability to various types of surfaces, as well as a coating protective against external factors such as exposure to water or moisture and physical friction. In the field of cosmetics, hair styling products that contain one or more of the above mentioned ingredients can be used to provide shape or styling to the hair and / or to help maintain a particular hair style. Cosmetic makeup products that employ these ingredients are used to enhance the appearance of the skin, lips and eyelashes. For example, mascara products employ waxes and polymers, such as film-forming polymers, which help to shape or curl eyelashes. Sun protection products and other cosmetics can also use these ingredients to provide a water-resistant film or coating on skin and hair, and also to help maintain the appearance and condition of skin and hair under extreme environmental conditions. Additionally, these ingredients can provide structure and texture to products and a certain feel and texture to a substrate.
[0004] Nevertheless, consumers are constantly looking for new products with improved performance and therefore there are still challenges today in terms of optimizing or enhancing the performance of these ingredients in various products. Furthermore, the formulation of waxes, polymers, resins and oils in various galenic forms such as sprays, foams, emulsions, gels, mousses, pastes and tubes can pose a challenge since some of these ingredients may not be easily introduced and / or dispersed in these galenic forms. In addition, the final formulas using these ingredients must remain stable over time.
[0005] For example, waxes are traditionally employed in a paste or ointment but may not be easily formulated into a spray or foam product, particularly at a concentration that will be sufficient to provide the desirable attributes obtained from a wax ingredient. . The type of wax can also affect the stability and dispersion of the wax particles in the formulation since the wax particles could agglomerate. Certain waxes can also result in a rough texture and / or an undesirable sticky and viscous feel of the product and / or the treated substrate.
[0006] It is also necessary to find a way to thicken liquid compositions containing wax and oil ingredients. Compositions containing these ingredients conventionally often have an undesirable sticky and / or pasty (non-creamy) nature, which can be induced by insufficient gelling or by excessive thickening of oils and waxes. Thus, it is desirable that the viscosity of the compositions is not too liquid (not too diluted or aqueous) in such a way that it easily drips or drips from a substrate, and not too thick in such a way that it is difficult to apply and spread evenly over a substrate. . At the same time, it is desirable that deposition on a substrate such as skin and hair, does not give rise to a greasy feeling or a feeling of dryness or stiffness.
[0007] In other words, the formulation with waxes, polymers, resins and oils still poses a challenge in terms of optimizing the benefits that can be obtained from these ingredients in themselves. Thus, there is still a need to improve how such ingredients can be formulated in various galenic forms, while at the same time optimizing the benefits derived from these ingredients and improving the performance of other ingredients such as active cosmetic ingredients, dyes, and agents of sun protection.
[0008] Thus, several technologies were developed aimed at the use of waxes, polymers, resins and oils. For example, shape memory polymers (SMPs) have been found to have the ability to change shape and therefore provide certain materials made of such polymers with the ability to change their shape or return to their original shape after deformation, particularly when an external stimulus such as heat or light is applied; SMPs can be used in packaging films, fabrics and medical devices (Marc Biehl and Andreas (2007). Shape Memory Polymers, Materials Today. 10 (4), p. 20-28). In the area of cosmetics and hair care, the documents US20080311050 and US20070275020 teach the use of polymers with shape memory in hair treatment compositions. However, SMPs are typically complex polymeric systems that can pose challenges in synthesis and formulation procedures in terms of solvent choice and galenic distribution / form.
[0009] Other teachings, such as those of document DE2810130, reveal the application of a polyamide powder to the hair and heating of the hair to fix the hair in a particular pattern; however, this reference does not teach that hair can be remodeled or repositioned and appears to be directed at wigs. WO8904653 and WO8901771 disclose the use of heat-activated hair styling compositions containing water-soluble polyethylene oxide polymers. EP1174113, US7998465 and US20120070391 are directed to the use of specific polymers, including thermofusible polymers, heat-expandable particles comprising certain polymers, and polysiloxanes and silanes. However, the use of polymers can still result in sticky formulas, can be difficult to formulate in a stable dispersion as a result of compatibility issues with surfactants, and does not necessarily provide a lasting effect on the head or the ability to easily remodel or reposition the hair without reapplying a product, for example.
[0010] The documents US7871600, US6066316, JP2003012478, US20060292095 and US20060263438 teach the preparation of wax and oil dispersions in cosmetic compositions for hair. For example, US7871600 teaches the use of a wax dispersion in a hair styling composition. However, said composition additionally requires a modeling polymer and a relatively high amount of wax from 30% to 45% by weight of the composition. US6066316 discloses fine wax dispersions containing wax, an amphoteric surfactant and a nonionic surfactant where the size of the wax particles is about 30 nm and the nonionic surfactant is directed to a specific class, ie, to alkyl ethers of polyoxypropylene. JP2003012478 teaches a hair composition with hair reshaping properties comprising an oil-soluble material, a nonionic surfactant and water; the oil-soluble material contains fatty acid, superior alcohol and wax. US20060292095 and US20060263438 disclose dispersions of oil particles with average sizes of 20 micrometers or less, and for use in sun protection and skin care compositions. Nevertheless, the preparation of dispersions of wax and oil particles and the formulation with these dispersions in various galenic forms can still pose challenges, particularly since there are a number of factors to consider when working with wax and oil particles such as size, shape, hardness and melting point. Another consideration is the challenge of finding a convenient and simple way to optimize the benefits provided by certain ingredients or raw materials.
[0011] For example, the ability to provide hair styling / shaping products to help maintain hair shape or to reposition / reshape hair without reapplying the product, to provide moisture resistance and impart other desirable hair properties, such as shine, conditioning, smoothness and ease of combing, while having good aesthetic characteristics they remain as additional areas for improvement, particularly in connection with the use of waxes and oils in such products.
[0012] Thus, it is an object of the present invention to provide a composition containing a dispersion material comprising particles having certain physical properties. It is also an object of the present invention to provide a new way of providing certain desirable properties to the surface of a substrate, in particular keratinous substrates, using the dispersion material and / or the compositions containing the dispersion material. BRIEF SUMMARY OF THE INVENTION
[0013] The present invention relates to an aqueous dispersion containing: a. particles with a particle size distribution based on volume with peaks in the range equal to or greater than 1 μm to about 100 μm and comprising: i. an oil gelling agent comprising at least one styrene block copolymer; and ii. a grease substance selected from at least one wax having a melting point greater than 35 ° C, at least one oil, and mixtures thereof; and b. a mixture of surfactants comprising: i. at least one nonionic surfactant; and ii. at least one ionic surfactant; and iii. Water.
[0014] The dispersion of the invention may optionally further contain at least one additional ingredient selected from an oil gelling except for a) (i), dyes, sun protection agents, a wax having a melting point of 35 ° C or less, fragrance oils, emulsifying polymers, silicas, talc, clays, and mixtures thereof;
[0015] The present invention also relates to a composition containing: A. an aqueous dispersion as disclosed above and comprising: (a) particles with a particle size distribution based on volume with peaks in the range equal to or greater than 1 μm at about 100 μm and comprising: an oil gelling agent comprising at least one styrene block copolymer; a grease substance selected from at least one wax having a melting point greater than 35 ° C, at least one oil, and mixtures thereof; and optionally, at least one additional ingredient selected from an oil gelling except for a) (i), dyes, sun protection agents, a wax having a melting point of 35 ° C or less, fragrance oils, emulsifying polymers , silicas, talc, clays, and mixtures thereof; (b) a mixture of surfactants comprising: at least one nonionic surfactant; and at least one ionic surfactant; and (c) water; and B. a vehicle comprising water, volatile organic solvents, non-volatile organic solvents, silicones, non-silicone oils, and mixtures thereof.
[0016] The above composition may further comprise at least one auxiliary ingredient selected from liquid lipids / oils, waxes, film-forming polymers, rheology modifying agents, wetting and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, shine agents, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and their mixtures.
[0017] In addition, the present invention also relates to methods for coating a substrate, such as keratinous substrates, said methods involving application on the substrate of the above-described aqueous dispersion or composition containing the aqueous dispersion and carrier, and optionally , the application of heat to the substrate. In particular, the present invention relates to a hair styling method that involves applying the dispersion or composition described above to the hair containing the aqueous dispersion and carrier, and applying heat to the hair. BRIEF DESCRIPTION OF THE FIGURES
[0018] FIG. 1 represents a graph showing measurements of pastyness and modulus of elasticity made for a mixture of wax - copolymer in styrene block and for a wax.
[0019] FIG. 2 represents a graph showing the effect of tallow on the adhesion properties of a mixture of wax-copolymer in styrene block and a wax. DETAILED DESCRIPTION OF THE INVENTION
[0020] As used herein, the expression "at least one" means one or more and thus includes individual components as well as mixtures / combinations.
[0021] It is also to be understood that, as used herein, the terms "o / a", "um" or "uma", mean "at least one / an", are understood to include the plural as well as the singular and should not be limited to "only one / one" unless explicitly stated otherwise. Thus, for example, the use of "a surfactant" is understood to mean at least one surfactant.
[0022] The term "comprising" (and its grammatical variations), as used here, is used in the inclusive sense of "having" or "including" and not in the exclusive sense of "consisting only of".
[0023] "Keratinous substrates", as used herein, include, but are not limited to, skin, lips, and keratinous fibers such as hair and eyelashes.
[0024] "Wax", as used here, means a hydrocarbon material, natural or synthetic, and which has a melting point in the ranges shown below. Polymers and copolymers are included in this definition. The term wax, as used herein, can also include a material composed of several components, including wax esters such as those derived from carboxylic acids and fatty alcohols, wax alcohols, and hydrocarbons.
[0025] The terms "gelling" or "gelling" or variations of these terms mean structuring or, more generally, thickening of the medium, which can lead according to the invention to a fluid or creamy or even solid consistency.
[0026] "Film former" or "film forming agent" as used here means a polymer or resin that leaves a film on the substrate to which it is applied, for example, after a solvent accompanying the film former has evaporated, absorbed and / or dissipated in the substrate. These terms can also refer to a polymer capable, either by itself or in the presence of an auxiliary film-forming agent, to form a continuous or discontinuous film that adheres to a support and especially to keratin substrates.
[0027] "volatile", as used herein, means having a flash point below about 100 ° C.
[0028] "Non-volatile", as used herein, means having a flash point above about 100 ° C.
[0029] "Substituted", as used here, means comprising at least one substituent. Non-limiting examples of substituents include atoms, such as oxygen atoms and nitrogen atoms, as well as functional groups, such as acyloxyalkyl groups, carboxylic acid groups, amine or amino groups, acylamino groups, amide groups, halogen-containing groups, ester groups , thiol groups, sulfonate groups, thiosulfate groups, siloxane groups, and polysiloxane groups. The substituent (s) may be additionally substituted.
[0030] As used here, the phrase "salts and their derivatives" is intended to mean all salts and derivatives comprising the same functional structure of the compound to which they refer, and which have similar properties.
[0031] The terms "organic compound" and "with an organic structure" mean compounds containing carbon atoms and hydrogen atoms and optionally hetero atoms such as S, O, N or P, alone or in combination.
[0032] As used here, the term "applying a composition to a substrate" and variations of that phrase are intended to mean contact of the substrate, for example, a keratinous substrate such as skin or hair, with at least one of the compositions of the invention , anyway.
[0033] As used here, "formed from" means obtained from the chemical reaction of, where "chemical reaction" includes spontaneous chemical reactions and induced chemical reactions. As used here, the phrase "formed from" is open and does not limit the components of the composition to those listed.
[0034] The term "stable" as used here means that the composition does not exhibit phase separation and / or crystallization.
[0035] The term "treat" (and its grammatical variations) as used here refers to the application of aqueous dispersion and compositions containing the dispersion on the surface of a substrate.
[0036] The term "shaping" (and its grammatical variations) as used here includes shaping or placing a keratinous fiber such as hair in a particular arrangement, shape or configuration; or altering the curvature of a keratinous fiber or other substrate; or repositioning a keratinous fiber or other substrate in a different arrangement, shape or configuration.
[0037] The compositions and methods of the present invention may comprise, consist of, or consist essentially of the essential elements and limitations of the invention described herein, as well as any additional or optional ingredients, components, or limitations described herein or otherwise useful.
[0038] In one embodiment, the present invention relates to a composition containing: A. an aqueous dispersion comprising: b. particles with a particle size distribution based on volume with peaks in the range of about 20 μm to about 70 μm and comprising: i. from about 0.1% to about 15% by weight of an oil gelling agent comprising at least one styrene block copolymer selected from a styrene-ethylene / butylene diblock copolymer, a triblock copolymer of styrene-ethylene / butylene-styrene, and mixtures thereof; ii. from about 10% to about 60% by weight of a grease substance comprising at least one wax having a melting point greater than 35 ° C; and iii. optionally, at least one additional ingredient selected from an oil gelling except for a) (i), dyes, sun protection agents, a wax having a melting point of 35 ° C or less, fragrance oils, emulsifying polymers, silicas, talc, clays, and their mixtures. ç. a mixture of surfactants comprising: at least one nonionic surfactant; and at least one ionic surfactant; and d. Water; all weights being based on the total weight of the aqueous dispersion; B. a vehicle comprising water, volatile organic solvents, non-volatile organic solvents, silicones, non-silicone oils, and mixtures thereof; and C. optionally at least one auxiliary ingredient selected from liquid lipids / oils, waxes, film forming polymers, rheology modifying agents, wetting agents and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, agents shine, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and mixtures.
[0039] In one embodiment, the present invention relates to a composition containing: A. an aqueous dispersion comprising: particles with a particle size distribution based on volume with peaks in the range of about 20 μm to about 70 μm and comprising: ii. from about 0.1% to about 15% by weight of an oil gelling agent comprising at least one styrene block copolymer selected from a styrene-ethylene / butylene diblock copolymer, a triblock copolymer of styrene-ethylene / butylene-styrene, and mixtures thereof; iii. a grease substance comprising at least one oil; and iv. optionally, at least one additional ingredient selected from an oil gelling except for a) (i), dyes, sun protection agents, a wax having a melting point of 35 ° C or less, fragrance oils, emulsifying polymers, silicas, talc, clays, and their mixtures. a mixture of surfactants comprising: at least one nonionic surfactant; and at least one ionic surfactant; and water; all weights being based on the total weight of the aqueous dispersion; B. a vehicle comprising water, volatile organic solvents, non-volatile organic solvents, silicones, non-silicone oils, and mixtures thereof; and C. optionally at least one auxiliary ingredient selected from liquid lipids / oils, waxes, film forming polymers, rheology modifying agents, wetting agents and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, agents shine, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and mixtures.
[0040] In one embodiment, the present invention relates to a composition containing: A. an aqueous dispersion comprising: particles with a particle size distribution based on volume with peaks in the range of about 20 μm to about 70 μm and comprising: from about 0.1% to about 15% by weight of an oil gelling agent comprising at least one styrene block copolymer selected from a styrene-ethylene / butylene diblock copolymer, a copolymer in styrene-ethylene / butylene-styrene triblock, and mixtures thereof; a grease substance comprising at least one wax having a melting point greater than 35 ° C and at least one oil; and optionally, at least one additional ingredient selected from an oil gelling except for a) (i), dyes, sun protection agents, a wax having a melting point of 35 ° C or less, fragrance oils, emulsifying polymers , silicas, talc, clays, and mixtures thereof; a mixture of surfactants comprising: at least one nonionic surfactant; and at least one ionic surfactant; and water; all weights being based on the total weight of the aqueous dispersion; B. a vehicle comprising water, volatile organic solvents, non-volatile organic solvents, silicones, non-silicone oils, and mixtures thereof; and C. optionally at least one auxiliary ingredient selected from liquid lipids / oils, waxes, film forming polymers, rheology modifying agents, wetting agents and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, agents shine, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and mixtures.
[0041] In one embodiment, the present invention relates to an aqueous dispersion comprising: a. particles with a particle size distribution based on volume with peaks in the range of about 20 μm to about 70 μm and comprising: i. from about 0.1% to about 15% by weight of an oil gelling agent comprising at least one styrene block copolymer selected from a styrene-ethylene / butylene diblock copolymer, a triblock copolymer of styrene-ethylene / butylene-styrene, and mixtures thereof; ii. from about 10% to about 60% by weight of a grease substance selected from at least one wax having a melting point greater than 35 ° C selected from beeswax, hydrogenated myristyl olive esters, hydrogenated stearyl olive, VP / eicosene copolymer, ditrimethyloylpropane tetra stearate, and C30-45 alkylldimethylsilyl propylsilesquioxane, and mixtures thereof; and iii. optionally, at least one additional ingredient selected from an oil gelling except a) (i), dyes, sun protection agents, a wax having a melting point of 35 ° C or less, emulsifying polymers, fragrance oils, silicas, talc, clays, and mixtures thereof; B. from about 1% to about 5% by weight of a surfactant mixture comprising: at least one nonionic surfactant selected from PEG-30 glyceryl stearate, sorbitan palmitate, PEG / PPG-10/1 dimethicone Cetyl, Bis-PEG / PPG-16/16 PEG / PPG-16/16 Dimethicone, Bis-PEG / PPG-20/5 PEG / PPG-20/5 Dimethicone, PEG / PPG-25/4 Dimethicone , Bis- (Glicerila / Laurila) Dimethicone de Glicerila e Laurila, Bis-PEG / PPG-14/14 Dimethicone, and mixtures thereof; and at least one ionic surfactant; and c. Water; all weights being based on the total weight of the aqueous dispersion.
[0042] In one embodiment, the ionic surfactant in the dispersion described above, is an anionic surfactant selected from dipalmitoylethyl hydroxyethylmonium methosulfate, distearoylethyl hydroxyethylmonium methosulfate, disodium stearoyl glutamate and sodium stearoyl glutamate, and their mixture.
[0043] In one embodiment, the ionic surfactant in the dispersion described above, is a cationic surfactant selected from cetrimony chloride, berrenthrimone chloride, and mixtures thereof.
[0044] In one embodiment, the compositions described above may optionally contain at least one auxiliary ingredient selected from liquid lipids / oils, waxes, film-forming polymers, rheology modifying agents, wetting agents and moisturizing agents, agents emulsifiers, structuring agents, propellants, surfactants, shine agents, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and their mixtures.
[0045] In certain embodiments, the aqueous dispersions described above further comprise an oil gelling agent other than the oil gelling agent comprising at least one styrene block copolymer chosen from semicrystalline polymers, the glutamide-based compounds, polyamides , and their mixtures.
[0046] The particles of the aqueous dispersions of the present invention can be activated by heat. Thus, the present invention also relates to methods for coating a substrate, such as keratinous substrates, said methods involving the application on the substrate of any of the aqueous dispersions described above or compositions containing the aqueous dispersions and vehicle, and the application of heat to the substrate.
[0047] In a preferred embodiment, the present invention relates to hair styling methods, said methods involving the application on the hair of any of the aqueous dispersions described above or compositions containing the aqueous dispersions and vehicle, the application of heat to the substrate, and optionally, using a medium to shape the hair in order to shape the hair.
[0048] In one embodiment, the present invention relates to compositions for the treatment of oily skin, hair or scalp and for making up or caring for the skin, hair or scalp.
[0049] In one embodiment, the present invention is also related to compositions containing any of the aqueous dispersions described above and the vehicle described above, in which the aqueous dispersion is obtained through any of the processes or protocols described herein, in order to that the particles comprising the aqueous dispersion have a particle size distribution based on the volume with peaks in the range equal to or greater than 1 μm to about 100 μm, such as from about 10 μm to about 80 μm, or between about 20 μm to about 80 μm, or between about 40 μm to about 65 μm, or between about 45 μm to about 65 μm, or between 1 μm and above to about 20 μm.
[0050] It has been surprisingly and unexpectedly discovered that the particles of the aqueous dispersion of the present disclosure can be prepared in a controlled or calibrated manner by using a mixture of surfactants that employs a combination of a nonionic surfactant and an ionic surfactant and following a process emulsification. As a result, a fine dispersion of particles can be obtained with a minimum of coalescence or agglomeration. In addition, the particles of the aqueous dispersion of the present disclosure are homogeneous with respect to their shape.
[0051] It was surprisingly and unexpectedly found that the aqueous dispersions of the present invention had reduced or minimized the stickiness or viscosity which are undesirable properties, generally attributed to the presence of waxes and / or oils.
[0052] Furthermore, the aqueous dispersion of the present disclosure can be formulated in compositions of various galenic forms such as gels, mousses, lotions, creams, pastes, ointments, sprays and foams. It was found that when the aqueous dispersion of the present disclosure was added in one of these galenic forms, the particles remained homogeneously and finely dispersed in the composition and said composition is stable even during storage and does not exhibit any agglomeration or precipitation of the particles. It was also surprisingly and unexpectedly found that the compositions had reduced or minimized the stickiness or viscosity which are undesirable properties in the product, generally attributed to the presence of waxes and / or oils.
[0053] The aqueous dispersion of the present disclosure and compositions containing the aqueous dispersion can be applied to various substrates to form a film or coating on the surface of the substrate. It was surprisingly and unexpectedly discovered that the film or coating on the surface of the substrate did not have any or a minimum of stickiness or viscosity; in addition, the film or coating was thin and uniform and was not brittle, that is, it did not break easily.
[0054] The aqueous dispersion of the present invention and the compositions containing the aqueous dispersion also conveyed a clean and natural feeling on the substrate, despite the presence of wax and / or oil. For example, when the composition containing the aqueous dispersion of the present disclosure was applied to a keratinous substrate such as hair, the film or coating formed on the hair was not brittle and did not undesirably harden the hair or cause the hair fibers to stick together or stick to each other. Instead, it was found that there was a natural sensation of the hair, that is, the film or coating was not heavy and / or thick.
[0055] It was also surprisingly and unexpectedly found that when the substrate with the film or coating described above is exposed to heat, additional benefits to the substrate are achieved, such as better and more lasting adhesion (or durability) and reshaping capacity in the case of a flexible or foldable substrate, such as hair. It was also found that the coated substrate can be subjected to additional remodeling and repositioning, when it is reheated, without the need to reapply the aqueous dispersion or composition containing the aqueous dispersion of the present disclosure.
[0056] Furthermore, although the aqueous dispersion and compositions containing the aqueous dispersion provide a coating or film to a substrate, said dispersion and compositions can be easily removed from the substrate by washing with water or with conventional cleaning agents.
[0057] Although it is not intended to be limited by any particular theory, it is believed that after applying the aqueous dispersion of the present invention on a substrate in conjunction with heating the substrate, the particles melt or soften, thus allowing the film or coating is repositioned on the substrate and / or adheres better and longer to the substrate.
[0058] The aqueous dispersion and compositions of the present disclosure are also useful in cosmetic applications for skin, lips, nails, and eyelashes such as makeup products, skin care and sun protection, particularly allowing beneficial ingredients in these products to stay longer in these products. substrates as a result of the film or coating formed on the substrates. WATER DISPERSION
[0059] The aqueous dispersion of the present disclosure contains particles comprising an oil gelling agent comprising at least one styrene block copolymer and a grease substance selected from at least one wax having a melting point greater than 35 ° C, at least one oil, and mixtures thereof.
[0060] The term "grease substance" means an organic compound that is insoluble in water at normal temperature (25 ° C) and at atmospheric pressure (760 mmHg) (solubility below 5%, preferably below 1% and still greater preference less than 0.1%). They have, in their structure, at least one hydrocarbon chain comprising at least 6 carbon atoms or a sequence of at least two siloxane groups. In addition, fatty substances are generally soluble in organic solvents under the same conditions of temperature and pressure, for example chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), liquid petroleum jelly or decamethylcyclopentassiloxane. The greasy substances of the invention do not contain any groups of salified or non-salified carboxylic acid (COOH or COO-).
[0061] As used in the present invention, the term "weak phase" refers to an oil or a mixture of oils or a wax or mixture of wax (s) and oil (s). OIL GELIFICANT
[0062] The at least one oil gelling agent of the present invention comprises at least one styrene block copolymer. Styrene Block Copolymer:
[0063] For the purposes of the present invention, the term "polymer" is intended to mean compounds comprising at least two repeat units, preferably at least three repeat units and, especially, at least 10 repeat units.
[0064] The styrene block copolymer of the invention is a hydrocarbon-based block copolymer, which is preferably soluble or dispersible in a grease phase or mixture containing fatty substances. In the present disclosure, fatty substances are chosen from oils and waxes. The styrene block copolymer is capable of thickening or gelling of the grease phase or mixture containing fatty substances.
[0065] Preferably, the styrene block copolymer is an amorphous polymer, which means a polymer that does not have a crystalline form. Such a compound has film-forming properties, that is, it is capable of forming a film when applied to the skin.
[0066] Preferably, the styrene block copolymer is obtained from at least one styrene monomer.
[0067] The styrene block copolymer can be especially a diblock, triblock, multiblock, radial or star copolymer, or mixtures thereof.
[0068] Such a styrene block copolymer is described in patent application US-A-2002/005562 and in patent US-A-5 221 534.
[0069] The copolymer may contain at least one block whose glass transition temperature is preferably less than 20 ° C, preferably less than or equal to 0 ° C, preferably less than or equal to - 20 ° C and more preferably less than or equal to - 40 ° C. The glass transition temperature of said block can be between -150 ° C and 20 ° C and especially between -100 ° C and 0 ° C.
[0070] The styrene block copolymer present in the composition according to the invention is an amorphous copolymer formed by polymerization of an olefin. The olefin can especially be an ethylenically unsaturated elastomeric monomer.
[0071] Examples of olefins that may be mentioned include ethylene carbide monomers, especially containing one or two ethylenic unsaturations, and containing 2 to 5 carbon atoms such as ethylene, propylene, butadiene, isoprene or pentadene.
[0072] Advantageously, the styrene block copolymer is an amorphous block copolymer of styrene and an olefin.
[0073] Block copolymers comprising at least one styrene block and at least one block comprising units chosen from butadiene, ethylene, propylene, butylene and isoprene or a mixture thereof are especially preferred. According to a preferred embodiment, the styrene block copolymer is hydrogenated to reduce residual ethylenic unsaturation after the polymerization of the monomers.
[0074] In particular, the styrene block copolymer is a copolymer, optionally hydrogenated, containing styrene blocks and ethylene / C3-C4 alkylene blocks.
[0075] According to a preferred embodiment, the oil gelling agent comprising at least one styrene block copolymer according to the invention comprises at least one diblock copolymer, which is preferably hydrogenated, preferably chosen from of styrene-ethylene / propylene copolymers, styrene-ethylene-butadiene copolymers and styrene-ethylene / butylene copolymers. The diblock polymers are specially sold under the name Kraton® Gl 701 E by the company Kraton Polymers.
[0076] According to another preferred embodiment, the oil gelling agent comprising at least one styrene block copolymer according to the invention comprises at least one triblock copolymer, which is preferably hydrogenated, preferably chosen at from styrene-ethylene / propylene-styrene copolymers, styrene-ethylene / butadiene-styrene copolymers, styrene-isoprene-styrene copolymers, and ethylene-butadiene-styrene copolymers. Triblock polymers are specially sold under the designations Kraton® G1650, Kraton® G1652, Kraton® G1657, Kraton® Dl 101, Kraton® Dl 102 and Kraton® Dl 160 by Kraton Polymers.
[0077] In accordance with an embodiment of the present invention, the at least one styrene block copolymer is a diblock copolymer chosen from a styrene-ethylene / butylene diblock copolymer, styrene-ethylene / propylene diblock copolymer, and their mixtures.
[0078] According to another embodiment of the present invention, the at least one styrene block copolymer is a styrene-ethylene / butylene-styrene triblock copolymer.
[0079] According to a preferred embodiment of the invention, it is especially possible to use a mixture of a styrene-ethylene / butylene-styrene triblock copolymer and a styrene-ethylene / butylene diblock copolymer, especially products sold under the designation Kraton® G1657M or Kraton® G1657MS by the company Kraton Polymers.
[0080] According to another preferred embodiment of the invention, it is possible to use a mixture of hygogenated styrene-butylene / ethylene-styrene copolymer and a hydrogenated ethylene-propylene-styrene star polymer, such a mixture possibly especially in isododecane or another oil. Such mixtures are sold, for example, by the company Penreco under the trade names Versagel® M5960 and Versagel® M5670.
[0081] In particularly preferred embodiments of the present invention, a mixture of styrene-ethylene / butylene-styrene copolymer and styrene-ethylene / butylene diblock copolymer is used. Preferably, the percentage amount of the triblock copolymer is greater than the percentage amount of the diblock polymer in the mixture, based on the total weight of the mixture. For example, the mixture may contain 70% by weight of the triblock copolymer and 30% by weight of the diblock copolymer. Such a mixture is available under the name INCI hydrogenated copolymer of styrene / butadiene, sold under the trade name Kraton® G1657M or Kraton® G1657MS or by the company Kraton Polymers.
The styrene block copolymer content according to the invention can vary from about 0.1% to about 15% by weight, preferably between about 0.5% to about 10% by weight , more preferably from about 1% to about 8% by weight, and even more preferably from about 1% to about 5% by weight based on the total weight of the aqueous dispersion, including all intervals and sub-intervals between them.
[0083] The styrene block copolymer is generally made up of rigid and soft domains. When mixed with other materials, such as waxes and / or oils, to form the particles of the present disclosure, it was surprisingly and unexpectedly found that compositions containing such particles provided the benefits of greater flexibility and toughness, while providing a clean and natural feeling to touch the hair. In addition, improvement of hair shape, body, vitality and movement memory compared to using wax alone, can be achieved.
[0084] The at least one oil gelling agent of the present invention can also comprise at least one additional oil gelling agent other than the oil gelling agent comprising at least one styrene block copolymer. The additional oil gelling agent can be chosen from semicrystalline polymers, a glutamide-based compound, a polyamide, and mixtures thereof. Semi-crystalline polymer:
[0085] For the purposes of the present invention, the term "semicrystalline polymer" means polymers comprising a crystallizable portion and an amorphous portion and having a reversible first-order change of phase temperature, in particular, the melting point (solid transition -liquid). The crystallizable portion is a side chain (or pendant chain) or a block in the main chain.
[0086] When the crystallizable portion of the semicrystalline polymer is a block of the polymer main chain, that crystallizable block has a different chemical nature than that of amorphous blocks; in this case, the semicrystalline polymer is a block copolymer, for example of the diblock, triblock or multiblock type. When the crystallizable portion is a chain that is pendant from the main chain, the semicrystalline polymer can be a homopolymer or a copolymer.
[0087] The semicrystalline polymer (s) according to the invention are solids at room temperature (25 ° C) and atmospheric pressure (760 mmHg).
[0088] Preferably, the semicrystalline polymer has an organic structure and a melting point greater than or equal to 30 ° C and preferably less than 150 ° C. More preferably, the melting point of the semicrystalline polymer is less than 100 ° C, such as less than 70 ° C.
[0089] The melting point values correspond to the melting point measured using a differential scanning calorimeter (DSC). (The melting point under consideration is the point corresponding to the temperature of the most endothermic peak in the thermogram).
[0090] The semicrystalline polymer (s) according to the invention preferably have a melting point that is higher than the temperature of the keratinous support intended to be brought into contact with the aqueous dispersions and the compositions of the present invention, in particular, the skin or the hair or the scalp.
[0091] According to the invention, semicrystalline polymers are advantageously soluble or dispersible in a grease phase or mixture containing fatty substances, as described above, especially at least 1% by weight, at a temperature that is higher than their fusion point.
[0092] In the context of the present invention, the term "crystallizable chain or block" is understood to mean a chain or block, which in the isolated state, would change from the amorphous state to the crystalline state reversibly, according to whether the temperature is above or below melting point. Within the context of the present invention, a "chain" is a group of atoms, which is pendant or is lateral, with respect to the main polymer chain. A block is a group of atoms belonging to the main chain, that group constituting one of the repeating units of the polymer.
[0093] Preferably, the polymer main chain of semicrystalline polymers is soluble in the grease phase or mixture containing fatty substances at a temperature above their melting point.
[0094] Preferably, the crystallizable blocks or chains of the semicrystalline polymers represent at least 30% of the total weight of each polymer and, better still, at least 40%. Semicrystalline polymers, containing crystallizable side chains, are homopolymers or copolymers. The semicrystalline polymers of the invention containing crystallizable blocks are block or multiblock copolymers. They can be obtained through polymerization of a monomer that contains reactive double bonds (or ethylene bonds) or through polycondensation. When the polymers of the invention are polymers with crystallizable side chains, these side chains are advantageously in random or statistical form.
[0095] Preferably, the semicrystalline polymers of the present invention are of synthetic origin.
[0096] According to a preferred embodiment, the semicrystalline polymer is chosen from: homopolymers and copolymers comprising units resulting from the polymerization of one or more monomers with hydrophobic crystallisable side chain (s); polymers having, in the main chain, at least one crystallizable block; polycondensates of the aliphatic or aromatic or aliphatic / aromatic polyester type; and ethylene and propylene copolymers prepared through metallocene catalysis.
[0097] A) semicrystalline polymers containing crystallisable side chains
[0098] Polymers and copolymers are particularly preferably chosen from semi-crystalline polymers with crystallizable side chains. In particular, those defined in documents US-A-5 156 911 and WO-A-01/19333 can be cited.
[0099] They are homopolymers or copolymers comprising from 50% to 100% by weight of units resulting from the polymerization of one or more monomers having a crystallizable hydrophobic side chain.
[0100] These homopolymers or copolymers are of any nature, as long as they satisfy the conditions mentioned here below with, in particular, the characteristic of being soluble or dispersible in the grease phase, by heating above their melting point (mp). They can result:
[0101] of polymerization, in particular the polymerization of radicals, of one or more monomers with ethylene double bond (s) or reactive (s) with respect to a polymerization, that is, having a vinyl group, (meta ) acrylic or allylic,
[0102] of the polycondensation of one or more monomers having co-reactive groups (carboxylic acid, sulfonic acid, alcohol, amine or isocyanate), for example polyesters, polyurethanes, polyethers, or polyureas.
[0103] In general, the crystallizable units (chains or blocks) of the semicrystalline polymers according to the invention are derived from monomer (s) containing crystallizable block (s) or chain (s) used for the manufacture of polymers semicrystalline. These polymers are preferably chosen especially from the homopolymers and copolymers that result from the polymerization of at least one monomer containing crystallizable chain (s) that can be represented by the formula X:
where M represents an atom of the polymer main chain, C represents a crystallizable group and S represents a spacer. crystallisable "-SC" chains are hydrocarbon-based aliphatic or aromatic chains, optionally fluorinated or perfluorinated, comprising C12-C40 alkyl chains, preferably C12-C28 and preferably C14-C24, saturated or unsaturated, based on hydrocarbon.
[0104] "C" especially represents a group (CH2) n, which can be linear or branched or cyclic, where n is an integer ranging from 12 to 40. Preferably, "C" is a linear group. Preferably, "S" and "C" are different.
[0105] When the crystallizable chains are hydrocarbon-based aliphatic chains, they comprise hydrocarbon-based alkyl chains containing at least 12 carbon atoms and no more than 40 carbon atoms and, better yet, no more than 24 carbon atoms. carbon. They are especially aliphatic chains or alkyl chains containing at least 12 carbon atoms, and are preferably C12-C40 alkyl chains, preferably C12-C28, preferably C14-C24 and preferably C16-C22.
[0106] Preferably, the crystallizable chains are aliphatic chains based on C16-C22 hydrocarbons.
[0107] When they are perfluorinated alkyl or fluoroalkyl chains, they comprise at least 11 carbon atoms, at least 6 of which are fluorinated carbon atoms.
[0108] Preferably, semicrystalline polymers having a crystallizable side chain are alkyl (meth) acrylate or alkyl (meth) acrylamide homopolymers with an alkyl group as defined above, in particular a C14-C24 alkyl group, copolymers thereof monomers with a hydrophilic monomer, preferably of a different nature from (meth) acrylic acid, such as N-vinylpyrrolidone (meth) acrylate or hydroxyethyl, and mixtures thereof.
[0109] Advantageously, the semicrystalline polymer (s) containing a side crystallizable side chain has (have) a weighted average molecular weight Mp in the range of 5000 to 1,000,000, preferably from 10,000 to 800,000, preferably from 15,000 to 500,000 and more preferably from 100,000 to 200,000.
[0110] According to a particular embodiment of the invention, a polymer can be chosen from homopolymers and copolymers that result from the polymerization of at least one monomer with a crystallizable side chain chosen from C10 to C30 (meth) acrylates saturated, which can be represented by the formula below:
where R1 is H or CH3, R represents a C10 to C30 alkyl group and X represents O.
[0111] According to a more particular embodiment of the invention, the polymer is derived from the polymerization of monomers containing a crystallizable chain, chosen from saturated (C10 to C30) (meth) acrylates.
[0112] As a particular example of a semicrystalline polymer that can be used in the composition according to the invention, mention can be made of the Intelimer® products from Landec, described in the brochure "Intelimer® Polymers", Landec IP22 (Ap 4- 97). These polymers are sold in solid form at room temperature (25 ° C). They contain crystallisable side chains and have the formula X above. They are polyalkyl acrylates (C10 to C30), which are particularly suitable as semi-crystalline polymers that can be included in a composition according to the present invention.
[0113] The semicrystalline polymers that can be used in the invention are in particular homopolymers or copolymers that contain at least one crystallizable side chain, such as those described in US-A-5 156 911, and mixtures thereof.
[0114] In preferred embodiments of the present invention, the semicrystalline polymer is chosen from polystearyl acrylate, such as the product sold under the designation Intelimer® IPA 13-1 from Air Products and Chemicals or Landec, and the polymer known under the INCI designation C10-30 alkyl polyacrylate and sold under the trade name Intelimer® IPA 13-6 from Air Products and Chemicals or Landec.
[0115] B) polymers with at least one crystallizable block in the polymer main chain
[0116] These polymers are especially block copolymers consisting of at least two blocks of a different chemical nature, one of which is crystallizable.
[0117] The polymer containing at least one crystallizable block in the main chain can be chosen from olefin or cycloolefin block copolymers containing a crystallizable chain.
[0118] The polymer containing at least one crystallizable block in the main chain can be chosen from copolymers containing at least one crystallizable block, the rest of the copolymer being amorphous (at room temperature). These copolymers can, in addition, have two crystallizable blocks that are different in their chemical nature.
[0119] C) polycondensed polyester type aliphatic or aromatic or aliphatic / aromatic
[0120] Polyester polycondensates can be chosen from aliphatic polyesters. Its molecular mass is preferably greater than or equal to 200 and less than or equal to 10,000, and more preferably greater than or equal to 300 and less than or equal to 5000, preferably greater than or equal to 500 and greater than or equal to 2000 g / mol.
[0121] Polyester polycondensates are in particular chosen from polycaprolactones. In particular, polycaprolactones can be chosen from homopolymers of e-caprolactone. Homopolymerization can be initiated with a diol, especially a diol containing 2 to 10 carbon atoms, such as diethylene glycol, 1,4-butanediol or neopentyl glycol.
[0122] Polycaprolactones can be used for example, especially those sold under the trade name CAP A® having different melting points and molecular weights by the company Solvay, or PCL-300 and PCL-700 by the company Union Carbide. CAP A (R) 2125 (melting point is between 35 and 45 ° C and the molecular weight is 1250) can be used in particular.
[0123] D) Ethylene and propylene copolymers prepared through metallocene catalysis
[0124] The semicrystalline polymer of the composition of the invention can also be a polymer obtained by means of metallocene catalysis, such as those described in US patent 2007/0031361.
[0125] These polymers are copolymers of ethylene and propylene prepared through metallocene catalysis, i.e. by low pressure polymerization and in the presence of a metallocene catalyst.
[0126] Copolymers of ethylene and propylene prepared through metallocene catalysis can be unmodified or with "polar" modification (that is, modified in such a way that they contain polar groups).
[0127] In some embodiments, copolymers with polar modification of ethylene and / or propylene, prepared through metallocene catalysis, are polymers modified in such a way that they have hydrophilic properties. Examples that can be mentioned include homopolymers or copolymers of ethylene and / or propylene modified by the presence of hydrophilic groups, such as maleic anhydride, acrylate, methacrylate, polyvinylpyrrolidone (PVP), etc.
[0128] Examples that can be mentioned include: polymers of polypropylene modified with maleic anhydride (PPMA) sold by the company Clariant, or copolymers of polypropylene-ethylene-maleic anhydride, such as those sold by the company Clariant, under the name LicoCare, for example LicoCare PP207 LP3349, LicoCare CM401 LP3345, LicoCare CA301 LP3346 and LicoCare CA302 LP3347. Glutamide-based compounds:
[0129] The glutamide-based compounds of the present invention are known to comprise a type of organogelifying agents. Preferably, the glutamide-based compounds of the present invention are non-polymeric.
[0130] According to the invention, an "organogelifying agent" defined as comprising an organic compound whose molecules may be able to establish, at least, one physical interaction that leads to the self-aggregation of the molecules with the formation of a three-dimensional macromolecular network which may be responsible for the gelation of a liquid grease phase or a mixture containing fatty substances.
[0131] Organogelifying agents can also be called lipophilic gelling agents.
[0132] The glutamide-based compounds of the invention can be solid or liquid at room temperature (20 ° C) and atmospheric pressure.
[0133] Preferably, the glutamide-based compounds are non-polymeric and are chosen from: a low molecular weight dialkyl N-acylglutamide having a linear alkyl chain, chosen especially from di (C2-C6) alkyl- N-acylglutamides in which the acyl group comprises a linear C8 to C22 alkyl chain, preferably such as lauroylglutamic acid dibutylamide (or dibutyl lauroyl glutamide), and / or a low molecular weight dialkyl N-acylglutamide having a molecular chain branched alkyl, chosen especially from (C2-C6) dialkyl-N-acylglutamides in which the acyl group comprises a branched Cg and C22 alkyl chain, preferably such as N-2-etihexanoylglamic acid (or dibutyl) dibutylamide ethylhexanoyl glutamide), and mixtures thereof.
[0134] Preferably, among the non-polymeric glutamide-based compounds that can be used are combinations of at least one low molecular weight dialkyl N-acylglutamide with a linear alkyl chain, chosen especially from N-acylglutamides dialkyl (C2-C6) group, in which the acyl group comprises a linear C8 to C22 alkyl chain, such as lauroylglutamic acid dibutylamide (dibutyl lauroyl glutamide), with at least one low molecular weight N-acylglutamide having a branched alkyl chain, chosen especially from dialkyl (C2-C6) N-acylglutamides, where the acyl group comprises a branched C8 to C22 alkyl chain, such as glutamic acid N-2-ethylhexanoyl dibutylamide (dibutyl ethylhexanoyl glutamide ) and preferably with a solvent that is capable of forming hydrogen bonds with these two glutamide-based compounds.
[0135] In preferred embodiments, the glutamide-based compound suitable for use in the present invention is Dibutil Lauroil Glutamide, known by the trade name GP-1 and sold by the company Ajinomoto. Polyamides:
[0136] The polyamides of the present invention can be chosen from hydrocarbon-based polyamides, silicone polyamides and mixtures thereof.
[0137] For the purposes of the present invention, the term "polyamide" means a compound containing at least two amide repeat units, preferably at least three amide repeat units and better still ten repeat amide units. amide. a) Hydrocarbon-based polyamide
[0138] The term "hydrocarbon-based polyamide" means a polyamide formed essentially of, or further consisting of, carbon and hydrogen atoms, and optionally oxygen and nitrogen atoms, and containing no silicone or fluorine atoms. It may contain alcohol, ester, ether, carboxylic acid, amine and / or amide groups.
[0139] For the purposes of the present invention, the term "functionalized chains" means an alkyl chain comprising one or more functional groups or reagents specially chosen from hydroxyl, ether, esters, oxyalkylene and polyoxyalkylene groups.
[0140] Advantageously, the polyamide of the present invention has a weighted average molecular weight of less than 100,000 g / mol (especially in the range 1000 to 100,000 g / mol), in particular less than 50,000 g / mol (especially in the 1000 to 50 000 g / mol) and more particularly in the 1000 to 30 000 g / mol range, preferably 2000 to 20 000 g / mol and even better 2000 to 10 000 g / mol.
[0141] This polyamide is insoluble in water, especially at 25 ° C.
[0142] According to a first embodiment of the invention, the polyamide used is a polyamide of structural formula (I):
where x represents a -N (R1) 2 group or a -OR1 group where R1 is a straight or branched chain C8 to C22 alkyl radical, which may be the same or different, R2 is a C28- diacid dimer residue C42, R3 is an ethylenediamine radical and is between 2 and 5; and their mixtures;
[0143] According to a particular mode, the polyamide used is an amide-terminated polyamide of the general formula (Ia)
where x represents a group -N (R1) 2 where R1 is a straight or branched chain C8 to C22 alkyl radical, which may be the same or different, R2 is a C28-C42 diacid dimer residue, R3 is a ethylenediamine radical en is between 2 and 5; and their mixtures;
[0144] At least one additional polyamide of formula (Ib) can also be used:

[0145] where X represents a -OR1 group where R1 is a C8 to c22 alkyl radical, and preferably c16 to c22, straight or branched chain, which may be the same or different, R2 is a diacid dimer residue C28-C42, R3 is an ethylenediamine radical and is between 2 and 5.
[0146] As examples of the polyamide compounds of formula (Ib), where X represents a -OR1 group, where R1 is a C8 to C22 alkyl radical, and preferably C16 and C22, straight or branched chain, which can be the same or different, R2 is a C28-C42 diacid dimer residue, R3 is an ethylenediamine radical and is between 2 and 5, mention may be made of commercial products sold by the Arizona Chemical company under the names Uniclear 80 and Uniclear 100 or Uniclear 80 V, Uniclear 100 V and Uniclear 100 VG, whose INCI designation is ethylenediamine / stearyl dimer copolymer. They are marketed, respectively, in the form of a gel containing 80% of active material in a mineral oil and in 100% active material. They have a softening point of 88 to 94 ° C. These commercial products are a mixture of copolymers of a C36 diacid coupled with ethylenediamine, which has a weighted average molecular weight of about 6000 g / mol. The terminal ester groups result from the esterification of the remaining terminal groups of acid with cetyl alcohol, stearyl alcohol or their mixtures (also known as cetylstearyl alcohol).
[0147] As examples of amide-terminated polyamide compounds, such as those described in US patent application 2009/0280076, and in particular an amide-terminated polyamide of formula (Ia) where X represents a group - N ( R1) 2 wherein R1 is a C8 to C22 alkyl radical, preferably C8 to C20, preferably C14 to C20, and most preferably C14 to C18, and most preferably C18, straight or branched chain, which can be equal or different, R2 is a C28-C42 diacid dimer residue, preferably a dilinoleic acid dimer residue, R3 is an ethylenediamine radical and is between 2 and 5, and preferably between 3 and 4, can be made mention of the compound of formula (Ia), whose INCI designation is a copolymer of dilinoleic acid / ethylenediamine of the bis-dioctadecylamide dimer.
[0148] As a specific example of a polyamide with an amide termination that can be used, mention may be made of the compound Haimalate PAM, sold by the company Kokyu Alcohol Kogyo, which is in combination with diisostearyl malate and whose INCI name is diisostearyl malate (e) dilinoleic acid / ethylenediamine copolymer of the bis-dioctadecylamide dimer.
[0149] Other examples of hydrocarbon-based polyamides are polyalkylenoxy polyamide, amide-terminated polyamide, and dilinoleate copolymer of hydrogenated ethylenediamine bis-stearyl / neopentyl glycol / stearyl dimer. b) Silicone polyamide
[0150] The silicone polyamides of the invention are preferably solid at room temperature (25 ° C) and atmospheric pressure (760 mmHg).
[0151] Silicone polyamides can be more particularly polymers comprising at least one unit of formula (III) or (IV):

on what:
[0152] R4, R5, R6 and R7, which can be identical or different, denote a group chosen from:
[0153] groups based on C1 to C40 hydrocarbons, linear, branched or cyclic, saturated or unsaturated, possibly containing one or more oxygen, sulfur and / or nitrogen atoms in their chain, and possibly being partially or totally replaced by fluorine atoms,
[0154] C6-C10 aryl groups, optionally substituted by one or more C1-C4 alkyl groups,
[0155] polyorganosiloxane chains, possibly containing one or more oxygen, sulfur and / or nitrogen atoms,
[0156] the groups X, which may be the same or different, represent a straight or branched chain alkylenediyl group C1 to C30, possibly containing one or more oxygen and / or nitrogen atoms in their chain;
[0157] Y represents a divalent alkylene, arylene, cycloalkylene, alkylarylene, or arylalkylene, C1 to C50, saturated or unsaturated, straight or branched chain, which may comprise one or more oxygen, sulfur and / or nitrogen atoms, and / or may contain as a substituent one of the following atoms or groups of atoms: fluorine, hydroxyl, C3 to C8 cycloalkyl, C1 to C40 alkyl, C5 to C10 aryl, phenyl optionally substituted by one to three C1 to C3 alkyl groups, hydroxyalkyl C1 to C3 and C1 to C6 aminoalkyl, or
[0158] Y represents a group corresponding to the formula:
on what:
[0159] T represents a trivalent or tetravalent C3 to C24 hydrocarbon group, straight or branched, saturated or unsaturated, optionally substituted by a polyorganosiloxane chain, and possibly containing one or more atoms chosen from O, N and S, or T represents a trivalent atom chosen from N, P and Al, and
[0160] R8 represents a straight or branched C1-C50 alkyl group, or a polyorganosiloxane chain, possibly comprising one or more ester, amide, urethane, thiocarbamate, urea, thiourea and / or sulfonamide groups, which may possibly , be linked to another polymer chain;
[0161] n is an integer in the range 2 to 500 and preferably 2 to 200, and m is an integer in the range 1 to 1000, preferably 1 to 700 and even better 6 to 200.
[0162] The polymer can comprise identical or different units of general formula (III) or (IV) of different lengths.
[0163] According to a variant of the modality of the invention, a copolymer comprising units of the formula (III) or (IV) and hydrocarbon-based polyamide units can be used. In that case, the polyamide-silicone units can be located at the ends of the hydrocarbon-based polyamide.
[0164] As examples of such silicone polyamides, mention may be made of compounds sold by the company Dow Corning under the designations DC 2-8179 (DP 100) and DC 2-8178 (DP 15), whose INCI designation is nylon copolymers - 611 / dimethicone.
[0165] According to a preferred embodiment, the polyamide of the present invention can be chosen from compounds with the INCI designations: polyalkyleneoxy polyamide, which is sold by Croda under the trade name OLEOCRAFT MP-30, polyamide with amide termination which is sold by Arizona Chemical under the trade name SYLVACLEAR A2614, dilinoleate copolymer of the hydrogenated bis-stearyl dimer ethylenediamine / neopentyl glycol / stearyl, which is sold by Croda under the trade name OLEOCRAFT LP-20, dilinoleate copolymer of ethylene dimer stearyl, sold by Croda under the trade name Uniclear 100 VG or OLEOCRAFT LP-10-PA- (MV), and mixtures thereof.
[0166] In certain embodiments, at least one additional oil gelling agent is chosen from C10-30 polyalkyl acrylates, a glutamide-based compound comprising dibutyl lauroyl glutamide, polyalkyleneoxy polyamide, amide-terminated polyamide, dilinoleate copolymer hydrogenated bis-stearyl ethylenediamine / neopentyl glycol / stearyl dimer, ethylenediamine / stearyl dimer copolymer, and mixtures thereof. WAX
[0167] The at least one wax which may be present in the dispersion particles of the present disclosure, has a melting point greater than 35 ° C, such as between greater than 35 ° C at about 250 ° C or so between about 40 ° C and about 100 ° C. At least one wax having a melting point greater than 35 ° C is defined as having a reversible change in solid / liquid state. The melting point of a wax in solid form is the same as the freezing point of its liquid form, and depends on factors such as the purity of the substance and the surrounding pressure. The melting point is the temperature at which a solid and its liquid are in equilibrium at any fixed pressure. A solid wax begins to soften at a temperature close to the melting point of the wax. With increasing temperature, the wax continues to soften / melt to a particular temperature, the wax becomes completely liquid at a standard atmospheric pressure. It is at this stage that an actual melting point value is given for the material under consideration. When the heat is removed, the liquefied wax material begins to solidify until the material returns to solid form. By bringing the wax material back to liquid (melting) it is possible to make it miscible with other materials such as oils, and form a microscopically homogeneous mixture. However, when the temperature of the mixture is brought to room temperature, recrystallization of the wax with the other materials in the mixture can be obtained.
[0168] The melting points of the wax (s) and particles of the aqueous dispersion of the present disclosure can be determined according to known methods or apparatus such as differential scanning calorimetry, Banc Koffler device, dot device melting points, and automatic melting point measurements.
[0169] The melting point of the wax (s) can also be defined as the temperature at which the peak endothermic heat flow occurs in a differential scanning calorimetry scan.
[0170] The wax (s) which may be present in the particles of the present disclosure and which have (have) a melting point above 35 ° C are (are) chosen from waxes that are solid or semi-solid at room temperature.
[0171] The wax (s) that may be present in the particles of the present disclosure, may be chosen from waxes that have hardness values in the range of about 0.001 MPa ( Mega Pa) at about 15 MPa, or as about 1 MPa to about 12 MPa, or as about 3 MPa to about 10 MPa.
[0172] The hardness of the wax can be determined by any known method or apparatus such as needle penetration or using a durometer or texturometer.
[0173] Natural waxes include animal, vegetable / plant, mineral, or petroleum-based waxes. They are typically esters of fatty acids and long-chain alcohols. Wax esters are derived from a variety of carboxylic acids and a variety of fatty alcohols. Waxes that can comprise the particle of the present disclosure can also be known as solid lipids.
[0174] Examples of suitable waxes include, but are not limited to, beeswax, hydrogenated alkyl olive esters (commercially available under the trade name phytowax olive), carnauba wax, candelilla wax, ouricuri wax, beeswax wax Japan, cork fiber wax or sugar cane wax, rice wax, montana wax, paraffin wax, lignite wax or microcrystalline wax, ceresin or ozoquerite, palm kernel glycerides / hydrogenated palm glycerides and hydrogenated oils such as hydrogenated castor oil or jojoba oil, sugar cane, retamo, bayberry, rice bran, soybean, castor, sparse, Japanese waxes, hydroxyoctacosanil hydroxystearate, Chinese wax, cetyl palmitate, lanolin, gum lacquer, and spermaceti; synthetic waxes such as those of the hydrocarbon type and polyethylene waxes obtained from the polymerization or copolymerization of ethylene, and Fischer-Tropsch® waxes, or fatty acid esters, such as octacosanil stearate, glycerides that are solid at temperatures of above 35 ° C, silicone waxes, such as alkyl- or alkoxydimethicone having an alkyl or alkoxy chain in the range of 10 to 45 carbon atoms, poly (di) methylsiloxane esters that are solid at 30 ° C and whose chain ester comprises at least 10 carbon atoms, or di (1,1,1-trimethylolpropane) tetra stearate, which is sold or manufactured by Heterene under the name HEST® 2T-4S, and mixtures thereof.
[0175] Other examples of solid waxes or lipids include C20-40 di- and triglycerides, including those containing unsaturated fatty acids, C20-40 fatty alcohols, C20-40 fatty amines and their compounds, and sterols.
[0176] The table below lists, in a non-limiting way, waxes whose melting points are greater than 35 ° C and which are suitable for use according to the present disclosure:



[0177] Particularly preferred waxes having a melting point of more than 35 ° C are beeswax, commercially available from various suppliers, hydrogenated stearyl olive ester, and commercially available from the supplier Sophim under the trade name Phytowax Olive 18 L 57, hydrogenated myristyl olive ester, and commercially available from the supplier Sophim under the trade name Phytowax Olive 14 L 48, VP / eicosene copolymer, commercially available from the ISP under the trade names Antaron® V 220 or Ganex® V 220F , and ditrimethylolpropane tetra stearate, commercially available from the supplier Heterene under the trade name HEST 2T-4S.
[0178] Other particularly preferred waxes having a melting point of more than 35 ° C are silicone waxes, including silsesquioxane resin waxes such as C30-45 alkyldimethylsilyl propylsesquioxane, commercially available as DOW CORNING SW-8005 C30 Resin Wax , from Dow Corning and such as those described in WO2005 / 100444.
[0179] The wax (es) that may be present in the particles of the present disclosure have (have) a melting point of more than 35 ° C, or may vary from about 40 ° At about 100 ° C, or as from about 40 ° C to about 80 ° C. The wax (s) that may be present in the particles of the present disclosure may be chosen from soft waxes and hard waxes. Soft waxes can be defined as those that have a melting point below about 70 ° C, and preferably a melting point below about 60 ° C. Hard waxes can be defined as those waxes that have a melting point equal to or more than about 70 ° C, and preferably a melting point equal to or more than about 60 ° C.
[0180] According to one embodiment, the soft waxes according to the present disclosure include, but are not limited to, paraffin wax, stearic alcohol, oxokerite, synthetic beeswax, beeswax, candelilla wax, copolymer of PVP / eicosene, hydrogenated jojoba wax, palm butter, shellac wax, polyglyceril beeswax, tricontanil / PVP, siliconyl beeswax, stearyl stearate, ceresin wax, hydrogenated myristyl olive esters ( eg phytowax olive 14 L 48), hydrogenated stearyl olive esters (eg phytowax olive 18 L 57), Koster K82P, orange peel wax, Pentaerythritol distearate, Theobroma Seed Butter Grandiflorum, silicone resin wax, polymethylalkyl dimethylsiloxane, pentaerythrityl tetra stearate, tetracontanil stearate, fatty acid wax, behenila alcohol, alkyl dimethicone wax, stearyl benzoate, berry wax, kel wax, wax from sili conila, Ditrimethylolpropane tetraestearate, Clariant's Licowax KST 1, Diphimerititol hexastearate, Ditrimethylolpropane tetrabehenate, PDMS behenila methacrylate gréffé, jojoba esters, wax olive, inholive, 16 kyatowaxic ricotta, macadamia oil synthetic wax, dooctadecyl carbonate, montana wax, lemon peel extract, ditrimethylolpropane tetra-stearate, and C30-45dimethylsilyl alkyl propylsesquioxane.
[0181] According to one embodiment, the hard waxes according to the present disclosure include, but are not limited to, carnauba wax, microcrystalline wax, polyethylene wax, hydrogenated castor oil, AC 540 wax, Hydroxyoctacosanil Hydroxystearate, hydrogenated castor wax, AC 400 wax, rice bran wax, C20-40 alkyl stearate, polyethylene alcohol wax, octanedioate, sunflower seed wax, Fischer-Tropsch wax, Chinese insect wax, gum wax - lacquer, behenila fumarate, synthetic wax, betsawax RX-13750, phytowax ricin 22 L 73, and vegetable wax.
[0182] The wax having a melting point of more than 35 ° C can be used in an amount ranging from about 10% to about 60% by weight, or preferably from about 15% to about 50% % by weight, such as from about 20% to about 40% by weight, or as from about 20% to about 30% by weight, based on the total weight of the aqueous dispersion of the present disclosure, including all intervals and sub-intervals between them. OIL
[0183] The term "non-silicone oil" means an oil that does not contain any silicone (Si) atoms and the term "silicone oil" means an oil containing at least one silicone atom.
[0184] The oils of the present disclosure can be chosen from C6-C16 hydrocarbons, hydrocarbons containing more than 16 carbon atoms, particularly linear or branched hydrocarbons, of mineral or synthetic origin having more than 16 carbon atoms, oils of non-silicone of animal origin, vegetable oils of the triglyceride type, synthetic triglycerides, fluorinated oils, liquid fatty alcohols, liquid fatty acid and / or esters of liquid fatty alcohol other than triglycerides and vegetable waxes, silicone oils, and mixtures thereof.
[0185] Fatty alcohols, esters and acids, more particularly, have at least one group based on saturated or unsaturated straight or branched chain hydrocarbons, comprising 6 to 30 and even better from 8 to 30 carbon atoms, which it is optionally substituted, in particular by one or more hydroxyl groups (in particular 1 to 4). If unsaturated, these compounds may comprise one to three conjugated or unconjugated carbon-carbon double bonds.
[0186] With respect to C6-C16 hydrocarbons, they are linear, branched or optionally cyclic, and are preferably alkanes.
[0187] An oil based hydrocarbon of animal origin, which can be mentioned, is perhydro-scalene.
[0188] Triglyceride oils of vegetable or synthetic origin are preferably chosen from liquid fatty acid triglycerides containing from 6 to 30 carbon atoms, for example heptanoic or octanoic acid triglycerides, or alternatively, for example, sunflower, corn oil, soybean oil, marrow oil, grape seed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, macaw oil, castor oil, avocado oil, caprylic / capric acid triglycerides, for example those sold by the company Stearineries Dubois or those sold under the designations Miglyol® 810, 812 and 818 by the company Dynamit Nobel, jojoba oil and shea butter oil.
[0189] Linear or branched hydrocarbons of mineral or synthetic origin having more than 16 carbon atoms are preferably chosen from liquid paraffins, petroleum jelly, liquid petroleum jelly, polydecenes or hydrogenated polyisobutene, such as Parleam®. Fluorinated oils that can be chosen from perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, sold under the designations Flutec® PC1 and Flutec® PC3 by the company BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the designations PF 5050® and PF 5060® by the company 3M, or bromoperfluorooctyl sold under the designation Foralkyl® by the company Atochem; nonafluoromethoxybutane and nonafluoroethoxyisobutane; perfluoro morpholine derivatives such as 4-trifluoromethyl perfluoro morpholine sold under the name PF 5052® by the company 3M.
[0190] Liquid fatty alcohols that are suitable for implementing the invention are selected, more particularly, from linear or branched, saturated or unsaturated alcohols, comprising from 6 to 30 carbon atoms and preferably from 8 to 30 carbon atoms . Mention may be made, for example, of octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol or linoleyl alcohol.
[0191] With regard to liquid fatty acids, mention may be made especially of saturated or unsaturated carboxylic acids, comprising from 6 to 30 carbon atoms, and preferably from 9 to 30 carbon atoms, preferably chosen from oleic acid, linoleic acid, linolenic acid and isostearic acid. These acids are not in the form of salts, that is, if present, the composition may not contain alkaline organic or mineral agents such as sodium hydroxide, potassium hydroxide, monoethanolamine, triethanolamine.
[0192] Regarding the liquid esters of a fatty acid and / or fatty alcohols, which are advantageously different from the aforementioned triglycerides, mention may be made especially of the liquid esters of saturated or unsaturated, linear or linear aliphatic C1-C26 polyacids branched and saturated or unsaturated, linear or branched C1-C26 monoalcohols or polyalcohols, the total number of esters carbon being 6 or more, and most advantageously 10 or more.
[0193] Esters according to this variant can also be selected from mono-, di-, tri- and tetraesters, polyesters and their mixtures.
[0194] These esters can be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates, arachidonates, or mixtures thereof, such as, particularly, mixed esters of oleate / palmitate, oleate / stearate or palmitate / stearate.
[0195] Among monoesters, mention may be made of: isocetyl stearate; isodecyl neopentanoate; isostearyl neopentanoate; 2-ethylhexyl isononanoate; ethyl and isopropyl palmitates, alkyl myristates, such as isopropyl myristate, ethyl.
[0196] Still in the context of this variant, esters of C4-C22 dicarboxylic or tricarboxylic acids and C1- C22 mono-, di- or tricarboxylic acids and di-, tri-, tetra- or pentahydroxy alcohols of C2-C26 can also be used.
[0197] Mention may be made in particular of: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; stearoyl octyldodecyl stearate; pentaerythrityl monorichinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisoestearate; pentaerythrityl tetraoctanoate; propylene glycol tipprilat; propylene glycol tip plate; tridecyl erucate; triisopropyl citrate; tri-isostearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentylglycol diheptanoate; diethylene glycol diononanoate and polyethylene glycol distearates.
[0198] Among the esters mentioned above, it is preferable to use ethyl palmitate, isopropyl, myristyl, cetyl or stearyl, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristates, such as isopropyl myristate, butyl, cetyl or 2-octyldodecyl, hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, isononyl isononanoate or cetyl octanoate.
[0199] The composition may also comprise, as liquid fatty ester, sugar esters and diesters of C6-C30 and preferably C12-C22 fatty acids. It is recalled that the term "sugar" should be understood as meaning compounds based on hydrocarbons containing oxygen, which have various functions of alcohol, with or without aldehyde or ketone functions, and which comprise at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.
[0200] Sugar esters of fatty acids can be selected in particular from the group comprising esters or mixtures of sugar esters previously described and fatty acids C6-C30 and preferably C12-C22 linear or branched, saturated or unsaturated. If unsaturated, these compounds may comprise one to three conjugated or unconjugated carbon-carbon double bonds.
[0201] An example that can be mentioned is the product sold under the brand name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.
[0202] The silicone oils that can be used in the powder composition of the present invention are volatile or non-volatile, cyclic, linear or branched silicones, which are unmodified or modified by organic groups, having a viscosity of 5x10-6 to 2.5 m2 / s at 25 ° C and preferably from 1 x 5 to 1 m2 / s.
[0203] Preferably, silicone is selected from liquid polydialkylsiloxanes, especially polydimethylsiloxanes (PDMS), and liquid organomodified polysiloxanes comprising at least one functional group selected from amino groups and alkoxy groups.
[0204] Organopolysiloxanes are defined in more detail in Walter Noll's Chemistry and Technology of Silicones (1968) Academic Press. They can be volatile or non-volatile.
[0205] When they are volatile, silicones are selected more particularly from those with a boiling point between 60 ° C and 260 ° C, and even more particularly from: (i) cyclic polydialalkylsiloxanes containing 3 to 7, and preferably 4 to 5 silicone atoms. These are, for example, octamethylcyclotetrasiloxane, sold privately, under the designation Volatile Silicone® 7207 by Union Carbide, or Silbione® 70045 V2 by Rhodia, decamethylcyclopentasiloxane, sold under the designation Volatile Silicone® 7158 by Union Carbide and Silbione® 70045 V5 by Rhodia, and their mixtures.
[0206] Cyclocopolymers of the dimethylsiloxane / methylalkylsiloxane type may also be mentioned, such as Volatile Silicone® FZ 3109 sold by the company Union Carbide.
[0207] Mixtures of cyclic polydialkylsiloxanes with organosilicone compounds, such as the mixture of octamethylcyclotetrasiloxane and tetra (trimethylsilyl) pentaerythritol (50/50) and the mixture of octamethylcyclotetrasiloxane and oxy-1,1'-bis (2,2 , 2 ', 2', 3,3'-hexatrimethylsilyloxy) neopentane;
[0208] (ii) linear volatile polydialkylsiloxanes containing 2 to 9 silicone atoms and having a viscosity less than or equal to 5x10-6 m2 / s at 25 ° C. An example is decamethyltetrasiloxane, marketed in particular under the name SH 200 by the company Toray Silicone.
[0209] Use may be made of non-volatile polydialkylsiloxanes, among which may be mentioned mainly polydimethylsiloxanes containing terminal trimethylsilyl groups. The viscosity of silicones is measured at 25 ° C according to ASTM 445 Annex C.
[0210] Among these polydialkylsiloxanes, one of the following commercial products may be mentioned, without implicit limitation: Silbione® oils of the 47 and 70 047 series or Mirasil® oils sold by Rhodia, such as, for example, 70 047 V 500 000; the Mirasil® series oils sold by Rhodia; 200 series oils from Dow Corning, such as DC200 with a viscosity of 60,000 mm2 / s; Viscasil® oils from General Electric and certain oils from the SF series (SF 96, SF 18) from General Electric.
[0211] Polydimethylsiloxanes containing terminal dimethylsilanol groups known under the name dimethicone (CTFA) may also be mentioned, such as oils from the 48 series from Rhodia.
[0212] Liquid fatty substances are advantageously chosen from liquid petroleum jelly, C6-C16 alkanes, polydecenes, non-silicone oils of vegetable origin. mineral or synthetic, liquid fatty alcohols, liquid fatty acids and liquid esters of a fatty acid and / or a fatty alcohol, or mixtures thereof.
[0213] A preferred liquid grease substance for use in the present invention is mineral oil (paraffin), which may be commercially available from the supplier Sonneborn under the trade name Kaydol® Heavy White Mineral Oil or from the supplier ExxonMobil Chemical under the trade name of PrimolTM 352 or Sonneborn under the trade name Blandol, or Armedsa under the trade name Aemoil M-302CG or ExxonMobil Chemical under the trade name Marcol 82.
[0214] In certain embodiments, suitable oils that may comprise the particles of the invention are non-volatile oils, including, but not limited to, vegetable oils and natural oils (sweet almond oil, macadamia oil, grape seed oil, olive oil, argan oil, tocopherol or vitamin E, shea butter oil, tocopherol or vitamin E oil); synthetic oils, for example, perhydrosqualene; fatty acids or fatty esters (for example C12-C15 alkyl benzoate sold under the trade name Finsolv® TN, commercially available from Innospec or Tegosoft® TN, commercially available from Evonik Goldschmidt, octyl palmitate, isopropyl lanolate; esters such as tocopheryl acetate and triglycerides, including capric / caprylic acid triglycerides); oxyethylene or oxypropylene esters and fatty ethers; or fluorinated oils, and polyalkylene.
[0215] Other suitable oils include, for example: silicone oils, or non-volatile polymethylsiloxanes (PDMS) with a linear or cyclic silicone chain, which are liquid or pasty at room temperature, especially cyclopolidimethylsiloxanes (cyclomethicone) such as cyclohexassiloxane; polydimethylsiloxanes comprising alkyl, alkoxy or phenyl groups, which are pendant or at the end of a silicone chain, these groups containing 2 to 24 carbon atoms; phenyl silicones, for example phenyl trimethicones, phenyl dimethicones, phenyltrimethylsiloxidiphenyl siloxanes, diphenyl dimethicones, diphenylmethyl-diphenyltrisiloxanes or 2-phenylethyl trimethylsiloxy silicates, and polymethylphenylsiloxanes; their mixtures. Other silicone oils include non-volatile silicones, for example, dimethicone fluids having viscosity values of 300 cst or more, and pentaphenyl dimethicone, also known as trimethyl pentaphenyl trisiloxane, commercially available from Dow Corning under the trade name Dow Corning® 555.
[0216] Other suitable oils include, but are not limited to, non-volatile oils based on hydrocarbons and esters, such as those described above.
[0217] The oil suitable for use in the present invention can also be a mixture of any of the oils described above, in particular oils that can transmit a fragrance or perfume or odors with a pleasant smell. Such a mixture can be referred to as a fragrance oil or perfumed oil or flavored oil.
[0218] The fragrance oils of the present invention may contain essential oils, flavor components, such as, for example, essential oils of sage, chamomile, cloves, Melissa balm, mint, cinnamon tree leaves, lemon blossom, juniper , vetiver, oilbanum, galbanum, labdanum, bergamot, citronelol, lemon, mandarin, orange and lavender.
[0219] In certain embodiments, the oil comprising the particles of the present disclosure is chosen from C6-C16 alkanes, non-silicone oils of vegetable, mineral or synthetic origin, liquid fatty alcohols, liquid fatty acids, liquid esters of a fatty acid , liquid esters of a fatty alcohol, silicone oils, fragrance oils and their mixtures.
[0220] In other embodiments, the oil comprising the particles of the present disclosure is a fragrance oil or a mixture of fragrance oils.
[0221] In yet other embodiments, the oil (s) that can comprise the particle of the present invention is (are) selected in such a way that the melting point of the particles of the present disclosure is greater than 35 ° C.
[0222] The oil which may comprise the particles of the present disclosure can be used in an amount ranging from about 85% to about 99.9% by weight, such as from about 85% to about 99% by weight , or as from about 90% to about 98% by weight, based on the total weight of the oil gelling agent comprising at least one styrene block copolymer and at least the oil of the present disclosure, including all intervals and sub-intervals between them. COMBINATIONS OF COPOLYMER IN STYLENE / WAX / OIL BLOCK
[0223] The particles of the present invention comprise an oil gelling agent comprising at least one styrene block copolymer and a grease substance selected from at least one wax having a melting point greater than 35 ° C, at least one oil, and mixtures thereof.
[0224] In an embodiment of the present invention, the particles comprise an oil gelling agent comprising at least one styrene block copolymer and a grease substance selected from at least one wax having a melting point greater than 35 ° C .
[0225] Preferably, the weight ratio of at least one wax having a melting point greater than 35 ° C and at least one styrene block copolymer ranges from about 100: 1 to about 1: 100 , such as from about 20: 1 to about 1:20, or as from about 10: 1 to about 1:10.
[0226] In one embodiment, the oil gelling agent comprising at least one styrene block copolymer is present in an amount of from about 5% to about 15% by weight and at least one wax it is present in an amount of from about 85% to about 95% by weight, all weights being based on the total weight of the oil and wax gelling agent.
[0227] In particularly preferred embodiments, the weight ratio of at least one wax, having a melting point greater than 35 ° C and at least one styrene block copolymer is about 11.5: 1.
[0228] In another embodiment, the particles are composed of an oil gelling agent comprising at least one styrene block copolymer and a grease substance selected from at least one oil.
[0229] In one embodiment, the weight ratio of at least one oil to at least one styrene block copolymer ranges from about 100: 1 to about 1: 100, such as from about 20: 1 at about 1:20, or about 10: 1 to about 1:10.
[0230] In another embodiment, the weight ratio of at least one oil to at least one styrene block copolymer ranges from about 5: 1 to about 1000: 1, where the at least one The oil is present in an amount of from about 85% to about 99.9% by weight, based on the total weight of the styrene block copolymer and at least one oil.
[0231] Still in an embodiment of the present invention, the particles are composed of an oil gelling agent comprising at least one styrene block copolymer and a grease substance comprising at least one wax with a melting point greater than 35 ° C, and at least one oil.
[0232] In certain embodiments, at least one wax having a melting point greater than 35 ° C, at least one oil, and at least one styrene block copolymer are each present in an amount of from about 0.1% to about 99.8% by weight, including all intervals and sub-intervals between them, all weights being based on the total weight of the styrene block copolymer, wax and oil.
[0233] In a particular embodiment, the amount of at least one wax having a melting point greater than 35 ° C is equal to or greater than the total amount of at least one oil and the amount of at least one styrene block copolymer. .
[0234] In one embodiment, when the at least one oil comprises a non-volatile oil, the weight ratio of at least one wax having a point of greater than 35 ° C, for at least one oil, and for the hair least one styrene block copolymer is 11.5: 1: 0.5.
[0235] In another embodiment, when the at least one oil comprises fragrance oils, the weight ratio of at least one wax having a melting point greater than 35 ° C, for at least one oil, and for the hair least one styrene block copolymer is 11.5: 1: 1.5. PARTICLES
[0236] The particles in the aqueous dispersion have a particle size distribution based on volume with peaks in the range equal to or greater than 1 μm to about 100 μm.
[0237] In certain preferred embodiments, the particles have a particle size distribution based on the peak volume in the range of about 30 μm to about 70 μm, or as about 40 μm to about 65 μm, or as about 45 μm to about 65 μm, or as equal to or greater than 1 μm to about 20 μm.
[0238] In preferred embodiments, the particles comprising the aqueous dispersion have a particle size distribution based on the volume with peaks in the range of about 20 μm to about 70 μm.
[0239] In particular preferred embodiments, the particles comprising the aqueous dispersion have a particle size distribution based on the volume with peaks in the range of about 45 μm to about 65 μm, preferably between about 45 μm and up to about 55μm. In some embodiments, the particles comprising the aqueous dispersion have a particle size distribution based on volume with a peak at about 50 µm.
[0240] In other embodiments, the particles comprising the aqueous dispersion have a particle size distribution based on the volume with peaks in the range equal to or greater than 1 μm to about 20 μm.
[0241] The term "volume-based particle size distribution", as used herein, refers to the particle size distribution of a dispersion in which the percentages of the population are determined based on the volume of particles in the indicated diameter. These distributions are measured by laser diffraction or similar methods.
[0242] The term "peak" as used herein with respect to volume-based particle size distribution refers to the particle diameter where the largest particle volume exists.
[0243] Thus, the particle size distribution based on the volume in the aqueous dispersion of the present disclosure can vary from 1 μm or greater to about 500 μm, or equal to or greater than 1 μm to about 250 μm , or equal to or greater than 1 μm to about 150 μm, with peaks in the particle size distribution based on volume in the range of 1 μm or greater to about 100 μm.
[0244] The particles of the present disclosure are preferably in solid or semi-solid form.
[0245] The particles of the aqueous dispersion of the present disclosure can be substantially homogeneous with respect to their shape. The term "substantially" as used in this context means that 50% or more of the particles in an aqueous dispersion of the present disclosure are of the same spherical, ellipsoidal or oval shape and of the same particle size. The term "substantially" as used here in the context of the shape of a spherical particle can also mean that the particle is substantially isotropic, i.e., has a relatively regular morphology.
[0246] Thus, the ratio of the lengths of the longest perpendicular axis to the shortest of the particle's cross section can be about 1: 1 or about 1.5: 1 or about 2: 1 or about 3: 1. Furthermore, a line of symmetry is not required when the particle has a spherical shape. In addition, the particle may have surface textures, such as lines or notches or protuberances that are small in scale when compared to the overall particle size and still be substantially spherical or ellipsoidal or oval.
[0247] The particle size, particle size distribution, and particle shape of the present disclosure can be evaluated by any known method such as those described in U.S. patent application number 2006/0292095, for example, by laser diffraction , ultrasonic extinction (acoustic spectroscopy), photo cross-correlation spectroscopy, particle size, and image analysis (optical microscopy).
[0248] The particles of the present disclosure have a melting point greater than 35 ° C, such as between greater than 35 ° C at about 250 ° C, or as between greater than 35 ° C at about 130 ° C, or as between greater than 35 ° C to about 120 ° C, or as between about 40 ° C to about 100 ° C, or as between about 40 ° C at about 65 ° C.
[0249] The particles of the present disclosure may have different properties with respect to hardness and / or melting point and / or shape and / or size. ADDITIONAL INGREDIENTS
[0250] The particles can further comprise additional ingredients, such as the oil gelling agents described above other than an oil gelling agent comprising at least one styrene block copolymer, dyes, sun protection agents, volatile solvents, melting point waxes. 35 ° C or less, emulsifying polymers, silica, talc, clays, ceramides and mixtures thereof. These additional ingredients can be added during the manufacturing time of the aqueous dispersion in order to improve / modify the physical properties of the particles and / or to allow the particles to provide other benefits in addition to the benefits obtained from the waxes.
[0251] The particles of the aqueous dispersion of the present invention may additionally comprise at least one dye. The at least one dye is preferably chosen from pigments and inks.
[0252] The term "Dye", as used herein, means any ingredient that provides color to a substrate or modifies / changes the color of said substrate by color deposition or attenuation / highlighting of the color of said substrate.
[0253] In a preferred embodiment, the at least one dye can be a pigment or an ink.
[0254] "Pigment", as used herein, can refer to any type of particle dye (any color including white or black) that is insoluble in water. Pigments can be organic, inorganic, or a combination of both in nature. A mixture of pigments in the pigment composition can produce various shades of color.
[0255] Representative pigments include white, colored, inorganic, organic, polymeric, non-polymeric, coated and uncoated pigments. Representative examples of mineral pigments include titanium dioxide, optionally surface treated, zirconium oxide, zinc oxide, cerium oxide, iron oxides, chromium oxides, manganese violet, ultramarine blue, chromium hydrate, and ferric blue. Representative examples of organic pigments include carbon black, D&C type pigments, and cochineal carmine, barium varnishes.
[0256] Among the organic pigments, carbon black and varnishes, such as calcium, barium, aluminum, zirconium or strontium salts can be mentioned.
[0257] The ink of the present invention includes, but is not limited to, water-soluble or fat-soluble inks.
[0258] Among the water-soluble paints, mention can be made of paints that are common in the field of cosmetics, such as Ponceau's disodium salt, green alizarine disodium salt, yellow quinoline, amaranth trisodium salt, salt disodium tartrazine, rhodamine monosodium salt, fuchsin disodium salt, and xanthophyll, and mixtures thereof.
[0259] Representative inks include, but are not limited to, direct dyes, such as halo acid inks, direct azo inks, direct meth inks, carbonyl direct inks, azine direct inks, nitro (hetero) aryl direct inks, especially inks nitrobenzene, and tri (hetero) arylmethane direct paints, tri (hetero) arylmethane paints, porphyrin paints, phthalocyanine direct paints, anthraquinone direct paints and their addition salts; alone or as mixtures. Examples of direct inks that can be used include those that are non-ionic, anionic, cationic, and amphoteric.
[0260] In several modalities, azo paints comprise a function -N = N- in which the two nitrogen atoms are not simultaneously attached to a ring. However, it is not excluded that one of the two nitrogen atoms in the sequence - N = N- is attached to a ring.
[0261] Inks of the metino family are, for example, compounds comprising at least one sequence chosen from> C = C <and -N = C <, in which the two atoms are not simultaneously coupled in a ring. However, it should be noted that one of the nitrogen or carbon atoms in the strings can be attached to a ring. More particularly, the inks of that family are derived from compounds of the true metino type (comprising one or more sequences mentioned above - C = C-); azomethine-type (comprising at least one or more of the -C = N- sequences) with, for example, azacarbocyanines and their isomers, diazacarbocyanines and their isomers, and tetraazacarbocyanines; mono- and diarylmethane type; of the indoamine type (or diphenylamine); the indophenol type; or the indoaniline type.
[0262] Regarding the paints of the carbonyl family, examples that can be mentioned include paints chosen from paints acridone, benzoquinone, anthraquinone, naphthoquinone, benzantrone, antrantrone, pirantrone, pyrazolantrone, pyrimidinoantrone, flavantrone, idantrone, flavone, (iso) violantrone, isoindolinone, benzimidazolone, isoquinolinone, anthrapyridone, pyrazoloquinazolone, perinone, quinacridone, quinophthalone, indigoid, thioindigo, naphthalimide, anthrapyrimidine, dichetopyrrolopyrrole and coumarin.
[0263] With regard to the inks of the azine family, mention may be made, for example, of the azine, xanthene, thioxanthene, fluorindine, acridine, (di) oxazine, (di) thiazine and pironin paints.
[0264] Aromatic nitro (hetero) paints are more particularly nitrobenzene or nitropyridine direct paints.
[0265] With respect to porphyrin or phthalocyanine type paints, it is possible to use cationic or non-cationic compounds, optionally comprising one or more metals or metal ions, for example, alkali metals, alkaline earth metals, zinc and silicone. Examples of particularly suitable synthetic direct inks, which may be mentioned, include nitrobenzene inks; direct azo inks; metino direct inks; direct azomethine inks, with, more particularly, diazacarbocyanines and their isomers and tetraazacarbocyanines (tetraazapentamethines); direct quinone inks, namely anthraquinone, naphthoquinone or benzoquinone inks; azine direct inks; direct xanthene inks; direct triarylmethane inks; direct indoamine inks; direct indigoid inks; direct phthalocyanine and porphyrin inks; individually or in mixtures.
[0266] In various embodiments, direct inks include, but are not limited to, cationic direct inks, such as mixed cationic inks including at least one chromophore, such as at least two chromophores. As used herein, the term "mixed cationic ink" means an ink whose cationic charge can form an integral part of the chromophore and / or the binder, or, alternatively, an ink, whose cationic charge is present through a substituent on the chromophore and / or in the binder. As used herein, "chromophore" means a radical derived from a dye, that is, a radical of a molecule that has at least a maximum absorption in the visible region between 400 and 800 nm, that absorbance having no need for prior oxidation or any combination with another chemical species.
[0267] The at least one chromophore can be chosen from chromophores of acridine, acridone, anthranthrone, anthrapyrimidine, anthraquinone, azine, azo, azomethine, benzantrone, benzimidazole, benzimidazolone, benzindole, benzoxazole, benzopirane, benzothiazole, benzothiazole, benzothiazole, benzothiazole azine, bis-isoindoline, carboxanilide, coumarin, canines, diazine, diketopyrrolopyrrole, dioxazin, diphenylamine, diphenylmethane and dithiazine, flavonoids, fluorindins, formazans, hydrazones, hydroxy ketones, indamine, indone, indanoid, indigo, indigo, indigo, indigo , isoindolines, isoindolinones, isoviolanthones, lactones, methines, naphthalimides, naphthylilides, naphtholactams, naphthoquinones, nitro paints, oxadiazoles, oxazins, perilones, perinones, perylenes, phenazines, phenothiazines, phthaloconas, pyrolanenes, pyrolenes, pyrolenes, pyrolazolines, pyrolazoles, pyrolenes, pyrolenes pyrimidinoanthrones, pyronines, quinacridones, quinolines, quinophthalones, squaranes, stilbenes, tetrazol thiazines, thioindigo, thiopyronines, triarylmethanes and xanthines.
[0268] Other suitable paints of the present invention include natural paints. Suitable examples of natural paints include, but are not limited to, mention may be made of quinone paints (lawsone, juglone, etc.), alizarin, purpurin, carminic acid, kermesic acid, purpurogalin, proto-catecholdehyde, indigo, curcumin , spinulin, various types of chlorophyll and chlorophyllin, orceins, hemateine, hematoxylin, brasilina, brasileín, saffron (such as cartamine), flavonoids (morina, apigenidine, sandalwood), anthocyanins (such as apigeninidine), carotenoids, tannins, preferably lawsone, juglone, alizarin, purpurin, carminic acid, kermesic acid, purpurogalin, protocatecaldehyde, indigo, isatin, curcumin, spinolin, apigenidine, chlorophylline, sorghum, orceins and cochineal carmine. It is also possible to use extracts or decoctions containing these natural dyes and, in particular, henna-based extracts.
[0269] In a particular modality, the, at least one dye (c) comprises paints chosen from direct paints and natural paints.
[0270] In a preferred embodiment, the dye comprises at least one compound generally used for the temporary coloring of hair on the head or nails or on the skin.
[0271] In other preferred embodiments, the dye may comprise at least one compound capable of temporarily coloring the skin, such as self-tanning agents (especially dihydroxyacetone, DHA).
[0272] Representative sunscreen agents that may additionally comprise particles from the aqueous dispersions of the present invention can be chosen from organic and inorganic sunscreens or UV filters.
[0273] Non-limiting examples of at least one sunscreen agent include anthranilates; salicylic derivatives; camphor derivatives; benzophenone and its derivatives; b, b diphenylacrylate and its derivatives; triazine derivatives; benzylidenocanfo and its derivatives; benzotriazole and its derivatives; benzalmalonate and its derivatives; benzimidazole and its derivatives; imidazolines; bis-benzazolyl derivatives; derivatives of p-aminobenzoic acid (PABA); methylenebis (hydroxyphenylbenzotriazole) and its derivatives; benzoxazole derivatives; screening polymers and screening silicones such as those described especially in patent application WO 93/04665; dimers derived from an alkyl styrene; 4,4-diaryl-butadienes, and mixtures thereof.
[0274] Examples of mineral photoprotective agents are chosen from pigments and even more preferably nanopigments (average primary particle size: generally between 5 nm and 100 nm and preferably between 10 nm and 50 nm) of treated or untreated metal oxides such as, for example, nanopigments of titanium oxide (amorphous or crystallized in the form of rutile and / or anatase), iron oxide, zinc oxide, zirconium oxide or cerium oxide. The treated nanopigments can be more particularly treated titanium oxides.
[0275] The treated nanopigments are pigments that have undergone one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with compounds, such as amino acids, bee bees, fatty acids, fatty alcohols, anionic surfactants, lecithins, salts sodium, potassium, zinc, iron or aluminum of fatty acids, metal alkoxides (titanium or aluminum), polyethylene, silicones, proteins (collagen or elastin), alkanolamines, silicone oxides, metal oxides, sodium hexametaphosphate, alumina or glycerol.
[0276] Mixtures of metal oxides, in particular titanium dioxide and cerium dioxide, including the mixture coated with silica of equal weight of titanium dioxide and cerium dioxide, as well as the mixture of dioxide titanium and zinc dioxide, coated with alumina, silica and silicone, or the mixture of titanium dioxide and zinc dioxide, coated with alumina, silica and glycerol.
[0277] Particularly preferred sunscreen agents of the present invention are chosen from octocrylene, terephthalylidenodicphorus derivatives, benzylidene camphor derivatives and benzotriazole derivatives, in particular, drometrizole trisiloxane, also known under the trade name Mexoryl XL.
[0278] The particles of the aqueous dispersions of the present disclosure can also further comprise volatile solvents. Representative examples of suitable volatile organic solvents include, but are not limited to, volatile hydrocarbon based oils and volatile silicone oils. The volatile solvents of the present invention are those other than fragrance oils.
[0279] Suitable volatile hydrocarbon oils include, but are not limited to, those having 8 to 16 carbon atoms and mixtures thereof, and in particular C8 to C16 alkanes such as C8 to C16 isoalkanes (also known as isoparaffins), isododecane, isodecane , isohexadecane, and, for example, oils sold under the trade names Isopar or Permethyl, branched esters C8 to C16 such as isohexyl or isodecyl neopentanoate and mixtures thereof. Preferably, volatile hydrocarbon oils have a flash point of at least 40 ° C. It is also possible to use mixtures of isoparaffins and other oils based on volatile hydrocarbons, such as petroleum distillates.
[0280] Suitable volatile silicone oils include linear or cyclic silicone oils having a viscosity at room temperature less than or equal to 6 cSt and having 2 to 7 silicone atoms, these silicones being optionally substituted by alkyl or alkoxy groups of 1 to 10 carbon atoms. Examples of volatile silicone oils that can be used include, but are not limited to, octamethyltetrasiloxane, decamethylcyclopentassiloxane, dodecamethylcyclohexassiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, decamethylmethylsiloxane, dodecametane and dodecametane. Preferably, volatile silicone oils have a flash point of at least 40 ° C.
[0281] Other suitable volatile solvents may be chosen from volatile polar solvents, including, but not limited to, alcohols, volatile esters and volatile ethers. In general they have a flash point below about 25 ° C.
[0282] While not wishing to be limited to any particular theory, it is believed that the presence of the volatile solvent in the aqueous dispersion of the present disclosure helps to soften the components of the particles and make them more malleable, making it easier to apply to a substrate .
[0283] Suitable additional waxes that can additionally comprise the particle are waxes whose melting points are at 35 ° C or less; these waxes include, but are not limited to, Hest 2T-5E-4S, Ditrimethylolpropane tetralaurate, Koster's BK-34, Fluorinated Polymethylalkyl Dimethylsiloxane, Dilauryl Adipate and Ditetradecyl Adipate, Astrocaryum Seed Oil, from Myrica Pubescens, Mango Glycerides PEG-70, oxypropylenated lanolin wax, hydrogenated Coco-glycerides.
[0284] However, waxes whose melting points are at 35 ° C or less are selected such that the melting point resulting from the particle of the present disclosure is greater than 35 ° C.
[0285] The particles of the aqueous dispersion of the present disclosure can comprise an emulsifying polymer, i.e., an amphiphilic polymer.
[0286] Among the emulsifying polymers that are suitable for use in the invention, mention may be made of: POE-POP diblock and triblock copolymers such as those described in Pat. U.S. No. 6,464,990; polyoxyethylene silicone surfactants such as those described in U.S. Pat. U.S. 6,120,778; Non-cross-linked hydrophobic AMPSs, such as those described in EP 1 466 588; amphiphilic acrylic polymers, such as PEMULEN TR-1 or TR-2. Silicas, Talc, and Clays
[0287] The particle of the aqueous dispersions of the invention may further comprise particles of silica with micrometer size, talcum, and / or clays, which include, but are not limited to, montmorillonite, bentonite, hectorite, atapulgite, sepiolite , laponite, smectite, kaolin, and their mixtures.
[0288] These clays can be modified with a chemical compound chosen from quaternary ammonia, tertiary amines, amine acetates, imidazolines, amine soaps, fatty sulfates, alkylarylsulfonates, amine oxides and mixtures thereof.
[0289] Mention may be made, such as organophilic clays, of quaternary bentonites 18; steralconium bentonites; or 18 / benzalkonium quaternary bentonites.
[0290] Suitable silicas can include pyrogen silicas obtained by high temperature hydrolysis of a volatile silicone compound in an oxyhydrogen flame, producing a finely divided silica. This process makes it possible in particular to obtain hydrophilic silicas that exhibit a large number of silanol groups on their surfaces.
[0291] It is possible to replace silanol groups with hydrophobic groups: a hydrophobic silica is then obtained. Hydrophobic groups can be: trimethylsiloxyl groups, obtained in particular by treating pyrogenic silica, in the presence of hexamethyldisilazane ("silica silica") or dimethylsilyloxy or polydimethylsiloxane groups, obtained in particular by treating pyrogenic silica, in the presence of polydimethylsiloxane or dimethyldichlorosilane ("Dimethyl silica silica").
[0292] Ceramide compounds which may be useful according to various disclosure modalities include ceramides, glycoceramides, pseudoceramides, and mixtures thereof. The ceramides that can be chosen include, but are not limited to, those described by DOWNING in Arch. Dermatol, Vol. 123, 1381 - 1384 (1987), DOWNING in Journal of Lipid Research, Vol. 35, page 2060 (1994), or those described in French patent FR 2673179.
[0293] Additional exemplary ceramides that can be used according to various disclosure modalities include, but are not limited to, compounds of the general formula (I):
where, in formula (I): R18 and R19 are independently chosen from alkyl or alkenyl groups with 10 to 22 carbon atoms, R20 is chosen from methyl, ethyl, n-propyl or isopropyl groups, and n is a number in the range 1 to 6, such as, for example, 2 or 3.
[0294] In additional embodiments, ceramide compounds can be chosen from compounds of formula (II), as described in documents US20050191251 and US20090282623:
where, in formula (II): R1 is chosen from a C1-C50 hydrocarbon radical, for example C5-C50, saturated or unsaturated, linear or branched, and it is also possible that this radical is substituted by one or more groups hydroxyl optionally esterified with an R7COOH acid, R7 being an optionally mono- or polyhydroxylated C1-C35 hydrocarbon radical, linear or branched, saturated or unsaturated, and it is possible that the hydroxyl (s) of the radical R7 are esterified with a C1-C35 fatty acid optionally mono- or polyhydroxylated, linear or branched, saturated or installed, or m radical R "- (NR-CO) -R ', R' being chosen from a hydrogen atom or a mono- or polyhydroxylated, R2 being chosen from a hydrogen atom, a saccharide-type radical; R3 chosen from a hydrogen atom or a hydroxylated or non-hydroxylated, saturated or unsaturated C1-C33 hydrocarbon radical; R4 being chosen from a hydrogen atom, a methyl or ethyl radical, a saturated or unsaturated, linear or branched C3-C50 hydrocarbon radical, optionally hydroxylated, or a --CH2 - CHOH - CH2 - O - R6 radical in which R6 denotes a radical of hydrocarbon C10-C26 or a radical R8 - O - CO - (CH2) p, R8 chosen from a hydrocarbon radical C1-C20, p being an integer in the range 1 to 12; and R5 designates a hydrogen atom or a C1- C30 hydrocarbon radical optionally mono- or polyhydroxylated, straight or branched, saturated or unsaturated, provided that when R3 and R5 denote hydrogen or when R3 denotes hydrogen and R5 denotes methyl, so R4 does not denote a hydrogen atom, or a methyl or ethyl radical.
[0295] Still in additional embodiments, ceramide compounds useful according to the disclosure can be chosen from compounds of the general formula (III):
wherein, in formula (III): R1 is chosen from a straight or branched chain alkyl group, saturated or unsaturated, derived from C14-C30 fatty acids; R2 is chosen from a hydrogen atom or a group (glycosyl) n, (galactosyl) m or sulfogalactosyl, where n is an integer from 1 to 4 and m is an integer from 1 to 8; and R3 is chosen from a group based on C5-C26 hydrocarbons that is saturated or unsaturated in the alpha position, and it is possible that this group is substituted by one or more C1-C14 alkyl groups.
[0296] Exemplary ceramides of the formula (III) are N-linoleoildihydroesfingosina, N-oleoildihidroesfingosina, N-palmitoildihidro-sfingosina, N-stearoildihidroesfingosina, N-behenoildihidroesfingosina, or mixtures thereof.
[0297] In additional embodiments, ceramide compounds useful according to the disclosure can be chosen from compounds of the general formula (IV):
where, in formula (IV): R11 and R12 are independently chosen from alkyl or alkenyl groups with 10 to 22 carbon atoms, R13 is an alkyl or hydroxyalkyl group with 1 to 4 carbon atoms, and n is a number in range 1 to 6, such as, for example, 2 or 3.
[0298] In at least one embodiment, the at least one ceramide compound is chosen from cetyl-PG-hydroxyethyl palmitamide. In an additional embodiment, at least one ceramide compound is chosen from propanediamide, N, N-dihexadecyl- N, N-bis- (2-hydroxyethyl), such as that sold commercially as Questamide H or Pseudoceramide H by Quest International Australia Pty. Ltd. Still in an additional embodiment, at least one ceramide compound is chosen from Cetyl-PG Hydroxylpalmatide / decyl glucoside / water, sold as SOFCARE P100H by Kao. MIXING SURFACTANTS
[0299] The surfactant blend of the present disclosure comprises at least one nonionic surfactant and at least one ionic surfactant.
[0300] In general, non-ionic surfactants having a Hydrophilic-Lipophilic Balance (HLB) of at least 5, such as from about 5 to about 20, or as from about 5 to about 15, are contemplated for use by the present invention. Non-limiting examples of nonionic surfactants useful in the compositions of the present invention are disclosed in McCutcheon's "Detergents and Emulsifiers," North American Edition (1986), published by Allured Publishing Corporation; and McCutcheon's "Functional Materials", North American Edition (1992); both of which are here reproduced in their entirety, as a reference.
[0301] Examples of nonionic surfactants useful here include, but are not limited to, alkoxylated derivatives of the following: fatty alcohols, alkyl phenols, fatty acids, fatty acid esters and fatty acid amides, where the alkyl chain is in the C12-C50 range, preferably in the C16-C40 range, more preferably in the C24 to C40 range, and having from about 1 to about 110 alkoxy groups. The alkoxy groups are selected from the group consisting of C2-C6 oxides and their mixtures, with ethylene oxide, propylene oxide, and their mixtures being the preferred alkoxides. The alkyl chain can be linear, branched, saturated, or unsaturated. Of these alkoxylated nonionic surfactants, alkoxylated alcohols are preferred, and ethoxylated alcohols and propoxylated alcohols are more preferred. Alkoxylated alcohols can be used alone or in mixtures. Alkoxylated alcohols can also be used in mixtures with the alkoxylated materials disclosed here above.
[0302] Other representative examples of such ethoxylated fatty alcohols include laureth-3 (a lauryl ethoxylate having an average ethoxylation degree of 3), laureth-23 (a lauryl ethoxylate having an average ethoxylation degree of 23), ceteth- 10 (a cetyl alcohol ethoxylate having an average ethoxylation degree of 10), steareth-10 (a stearyl alcohol ethoxylate having an average ethoxylation degree of 10), and steareth-2 (a stearyl alcohol ethoxylate having an average ethoxylation degree of 2), steareth-100 (a stearyl alcohol ethoxylate having an average ethoxylation degree of 100), beheneth-5 (a behenila alcohol ethoxylate having an average ethoxylation degree of 5), beheneth -10 (a behenyl alcohol ethoxylate having an average ethoxylation degree of 10), and other derivatives and mixtures of the foregoing.
[0303] Brij® nonionic surfactants are also commercially available from Uniqema, Wilmington, DE. Typically, Brij® are the condensation products of aliphatic alcohols with from about 1 to about 54 moles of ethylene oxide, the alkyl chain of the alcohol typically being a linear chain and having from about 8 to about 22 atoms of carbon, for example, Brij® 72 (ie, Steareth-2) and Brij® 76 (ie, Steareth-10).
[0304] Also useful here as non-ionic surfactants are alkyl glycosides, which are the condensation products of long-chain alcohols, eg C8-C30 alcohols, with sugar or starch polymers. These compounds can be represented by the formula (S) n - O - R where S is a portion of sugar such as glucose, fructose, mannose, galactose, and the like; n is an integer from about 1 to about 1000, and R is a C8-C30 alkyl group. Examples of long-chain alcohols from which the alkyl group can be derived include decyl alcohol, cetyl alcohol, stearyl alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol, and the like. Preferred examples of these surfactants are alkyl polyglucosides where S is a glucose moiety, R is a C8-C20 alkyl group, and n is an integer from about 1 to about 9. Commercially available examples of such surfactants include decyl polyglucoside ( available as APG® 325 CS) and lauryl polyglucoside (available as APG® 600CS and 625 CS), all the APG® polyglucosides identified above are available from Cognis, Ambler, Pa. Sucrose ester surfactants such as sucrose cocoate and laurate sucrose are also useful here.
[0305] Other nonionic surfactants suitable for use in the present invention are glyceryl esters and polyglyceryl esters and their derivatives, including, but not limited to, glyceryl monoesters, preferably saturated chain C16-C22 fatty acid monoesters , unsaturated and branched such as glyceryl oleate, glyceryl monostearate, glyceryl mono stearate, glyceryl monopalmitate, glyceryl monobehenate, and mixtures thereof, and saturated, branched, C16-C22 fatty acid polyglycerol esters, such as polyglyceryl-4 isostearate, polyglyceryl-3 oleate, polyglyceryl-2 sesquiolate, triglyceryl diisoestearate, diglyceryl monooleate, tetraglyceryl monooleate, and mixtures thereof. Glyceryl ester derivatives include, but are not limited to, polyethylene glycol ethers of glyceryl esters such as PEG-30 glyceryl stearate, PEG-30 glyceryl diisostearate, PEG-30 glyceryl isostearate, PEG-30 laurate glyceryl PEG-30, glyceryl oleate PEG-30, and mixtures thereof.
[0306] Sorbitan esters are also useful as nonionic surfactants. Sorbitan esters of saturated, unsaturated and branched chain C16-C22 fatty acids are preferred. Due to the way in which they are typically manufactured, these sorbitan esters usually comprise mixtures of mono-, di-, tri-, etc. esters. Representative examples of suitable sorbitan esters include sorbitan monooleate (e.g., SPAN® 80), sorbitan sesquioleate (e.g., Arlacel® 83 from Uniqema, Wilmington, Del.), Sorbitan monoisoestearate (e.g. ., CRILL® 6 by Croda, Inc., Edison, NJ), sorbitan stearates (e.g., SPAN® 60), sorbitan trioleate (e.g., SPAN® 85), sorbitan tristearate (e.g. , SPAN® 65), sorbitan palmitate (e.g., SPAN® 40), and sorbitan isostearate. Sorbitan palmitate and sorbitan sesquiolate are particularly preferred for use in the present disclosure.
[0307] Also suitable for use here are alkoxylated derivatives of glyceryl esters, sorbitan esters, and alkyl polyglycosides, where the alkoxy groups are selected from the group consisting of C2-C6 oxides and their mixtures, with ethoxylated or propoxylated derivatives thereof. materials being preferred. Non-limiting examples of commercially available ethoxylated materials include TWEEN® (mono-, di- and / or ethoxylated sorbitan tri-esters of C12 to C18 fatty acids with an average degree of ethoxylation from about 2 to about 20).
[0308] Preferred non-ionic surfactants are those formed from a fatty alcohol, a fatty acid, or a glyceride with a C4 to C36 carbon chain, preferably a C12 to C18 carbon chain, more preferably a C16 to carbon chain C18, derivatized to give an HLB of at least 8. HLB is understood to mean the balance between the size and strength of the hydrophilic group and the size and strength of the lipophilic group of the surfactant. Such derivatives can be polymers such as ethoxylates, propoxylates, polyglucosides, polyglycerines, polylactates, polyglycolates, polysorbates, and others that would be apparent to one skilled in the art. Such derivatives can also be mixed polymers of the above, such as ethoxylate / propoxylate species, where the total HLB is preferably greater than or equal to 8. Preferably, nonionic surfactants contain ethoxylate in a molar content of 10-25, more preferably 10-20 moles.
[0309] Particularly preferred nonionic surfactants of the present disclosure are chosen from polyethylene glycol ethers of glyceryl esters, PEG-30 glyceryl stearate, and sorbitan esters such as sorbitan palmitate.
[0310] Other particularly preferred nonionic surfactants are emulsifying polymers based on silicone or siloxane having alkoxylated groups and / or side chains such as PEG / PPG-10/1 Cetyl Dimethicone (trade name Abil® EM 90); Bis-PEG / PPG-16/16 PEG / PPG-16/16 dimethicone, commercially available in a mixture with Caprylic / Capric Triglyceride (trade name Abil® Care 85); Bis-PEG / PPG-20/5 PEG / PPG-20/5 Dimethicone and PEG / PPG-25/4 Dimethicone, commercially available in a mixture with Caprylic / Capric Triglyceride (trade name Abil® Care XL 80); PEG / PPG-10/1 Cetyl dimethicone, commercially available in a mixture with Polyglyceryl-4 isostearate and Hexyl Laurate (trade name Abil® WE 09); Dimethicone of Lauril Glicerila Bis- (Glicerila / Laurila), commercially available in a mixture with Caprylic / Capric Triglyceride (trade name Abil® EM 120); Bis-PEG / PPG-14/14 dimethicone, commercially available in a mixture with dimethicone (trade name Abil EM 97 S), all commercially available from Evonik Goldschmidt GmbH.
[0311] Ionic surfactants typically contain a lipophilic hydrocarbon group and a polar functional hydrophilic group.
[0312] The following anionic surfactants, which can be used alone or as mixtures, can be mentioned: mention may be made especially of salts, in particular alkali metal salts such as sodium salts, ammonium salts, salts amine, the amino alcohol salts or alkaline earth metal salts, for example magnesium, of the following compounds: alkyl sulphates, alkyl sulphates ether, alkyl starch ether sulphates, polyethyl alkyl sulphates, monoglyceride sulphates; alkylsulfonates, alkyl phosphates, alkylamidesulfonates, alkylarylsulfonates, α-olefin sulfonates, paraffin sulfonates; alkyl sulfosuccinates, alkyl sulfosuccinates, alkyl amide sulfosuccinates; alkyl sulfoacetates; acylsarcosinates; and acylglutamates, the alkyl or acyl groups of all such compounds comprising from 6 to 24 carbon atoms and the aryl group preferably denoting a phenyl or benzyl group. It is also possible to use C6-C24 alkyl esters and polyglycoside carboxylic acids, such as alkyl glucoside citrates, polyalkyl glycoside tartrates and polyalkyl glycoside sulfosuccinates; alkyl sulfosuccinates, acyl isethionates and N-acyltaurates, the alkyl or acyl group of all these compounds containing 12 to 20 carbon atoms. Among the anionic surfactants that can also be used, mention may also be made of acyl lactylates in which the acyl group contains 8 to 20 carbon atoms. Mention may also be made of alkyl-D-galactosideuronic acids and their salts, and also alkyl (C6-C24) ether-carboxylic acids, polyoxyalkylenated acids, (C6-C24) alkyl (C6-C24) polyoxyalkylenated ethercarboxylic acids and (C6-alkyl) acids - C24) polyoxyalkylene alkyl starches and their salts, in particular those comprising 2 to 50 ethylene oxide groups, and mixtures thereof.
[0313] Among the preferred anionic surfactants, mention may be made of salts, in particular sodium, magnesium or ammonium, alkyl sulfates; alkyl ether sulfates, for example sodium lauryl sulfate ether, preferably containing 2 or 3 mol of ethylene oxide; acyl glutamates, for example, disodium stearoyl glutamate and sodium stearoyl glutamate; alkyl carboxylate ether; and mixtures thereof, containing the alkyl or acyl groups generally from 6 to 24 carbon atoms and preferably from 8 to 16 carbon atoms.
[0314] Among cationic surfactants, mention may be made of:
[0315] alkylpyridinium salts, imidazoline ammonium salts, diquaternary ammonium salts, and ammonium salts containing at least one ester function;
[0316] ii) quaternary ammonium salts having the following general formula:
wherein the radicals R1 to R4, which may be identical or different, represent a linear or branched aliphatic radical containing 1 to 30 carbon atoms, or an aromatic radical such as aryl or alkylaryl; aliphatic radicals can optionally comprise heteroatoms (O, N, S or halogens) and can be optionally substituted.
[0317] Aliphatic radicals are chosen, for example, from C12-C22 alkyl radicals, alkoxy, C2-C6 polyoxyalkylene, alkylamide, alkyl (C12-C22) amidoalkyl (C2-C6), alkyl (C12-C22) acetate and hydroxyalkyl, containing from 1 to 30 carbon atoms. X- - is an anion chosen from the group of halides, phosphates, acetates, lactates, C2-C6 alkyl sulfates and alkyl or alkylarylsulfonates.
[0318] iii) imidazoline quaternary ammonium salts of the formula:
characterized by the fact that:
[0319] R5 represents an alkenyl or alkyl radical containing 8 to 30 carbon atoms, for example, derivatives of tallow or coconut fatty acids,
[0320] R6 represents a hydrogen atom, a C1-C4 alkyl radical or an alkenyl or alkyl radical containing 8 to 30 carbon atoms,
[0321] R7 represents a C1-C4 alkyl radical,
[0322] R8 represents a hydrogen atom or a C1-C4 alkyl radical,
[0323] X 'is an anion chosen from the group of halides, phosphates, acetates, lactates, C2-C6 alkyl sulfates and alkyl sulfonates or alkyl aryl sulfonates.
[0324] R5 and R6 preferably denote a mixture of alkenyl or alkyl radicals containing 12 to 21 carbon atoms, such as, for example, derivatives of tallow fatty acids, R7 denotes methyl and R8 denotes hydrogen. Such a product is, for example, Quaternium-27 (CTFA 1997) or Quaternium-83 (CTFA 1997), which are sold under the designations Rewoquat® W75, W90, W75PG and W75HPG by the company Witco,
[0325] iv) diquaternary ammonium salts of the formula:
on what:
[0326] R9 denotes an aliphatic radical containing about 16 to 30 carbon atoms,
[0327] R10, R11, R12, R13 and R14, which can be identical or different, are chosen from hydrogen and an alkyl radical containing from 1 to 4 carbon atoms,
[0328] X- is an anion chosen from the group of halides, acetates, phosphates, nitrates, ethyl sulfates and methyl sulfates.
[0329] Such diquaternary ammonium salts comprise, in particular, propane tallow diamonium dichloride;
[0330] v) quaternary ammonium salts containing at least one ester function, such as those of the formula:
on what:
[0331] R15 is chosen from C1-C6 alkyl radicals and C1-C6 hydroxyalkyl or dihydroxyalkyl radicals;
[0332] R16 is chosen from the radical R19 — CO—, radicals R20 based on C1-C22 hydrocarbons, saturated or unsaturated, linear or branched, a hydrogen atom;
[0333] R18 is chosen from the radical R21 — CO—, radicals R22 based on C1-C22 hydrocarbons, saturated or unsaturated, linear or branched, a hydrogen atom;
[0334] R17, R19 and R21, which may be identical or different, are selected from radicals based on C7-C21 hydrocarbons, saturated or unsaturated, linear or branched;
[0335] r, n and p, which can be identical or different, are whole numbers in the range 2 to 6;
[0336] y is an integer in the range 1 to 10;
[0337] x and z, which can be identical or different, are whole numbers in the range 0 to 10;
[0338] X- is a simple or complex organic or mineral anion;
[0339] as long as the sum x + y + z is from 1 to 15, that when x is 0, then R16 denotes R20 and that, when z is 0, then R18 denotes R22.
[0340] The alkyl radicals R15 can be linear or branched, and more particularly linear. Preferably, R15 denotes a methyl, ethyl, hydroxyethyl or dihydroxypropyl radical, and more particularly a methyl or ethyl radical.
[0341] Advantageously, the sum x + y + z is from 1 to 10.
[0342] When R16 is a R20 radical based on hydrocarbons, it can contain 12 to 22 carbon atoms, or contain 1 to 3 carbon atoms.
[0343] When R18 is a hydrocarbon based R22 radical, it preferably contains 1 to 3 carbon atoms.
[0344] Advantageously, R17, R19 and R21, which may be identical or different, are chosen from saturated or unsaturated, linear or branched C11-C21 hydrocarbon radicals, and more particularly, from saturated alkyl and C11-C21 alkenyl radicals or unsaturated, linear or branched.
[0345] Preferably, x and z, which can be identical or different, are equal to 0 or 1. Advantageously, y is equal to 1.
[0346] Preferably, r, n and p, which can be identical or different, are equal to 2 or 3 and even more particularly equal to 2.
[0347] The X- anion is preferably a halide (chloride, bromide or iodide) or a C1-C4 alkyl sulfate, more particularly methyl sulfate. The X- anion can also represent methanesulfonate, phosphate, nitrate, tosylate, an anion derived from an organic acid (such as acetate or lactate), or any other anion that is compatible with ammonium containing an ester function.
[0348] Surfactants may be, for example, the diacyloxyethyldimethylammonium (chloride or methyl sulfate), diacyloxyethylhydroxyethyldimethylammonium, monoacyloxyethylhydroxyethyldimethylammonium, triacyloxyethylmethylammonium, monoacylimethylamethylamyltamyl hydroxyethyl hydroxyl compounds. The acyl radicals preferably contain 14 to 18 carbon atoms and are more particularly derived from a vegetable oil, for example palm oil or sunflower oil. When the compounds contain several acyl radicals, these groups can be identical or different. Such compounds are sold, for example, under the designations Dehyquart® by Cognis, Stepanquat® by Stepan, Noxamium® by Ceca, and Rewoquat®WE 18 by Rewo-Goldschmidt.
[0349] vi) quaternary ammonium salts and in particular behenyltrimethylammonium chloride, dipalmitoylethylhydroxyethylmethylammonium methosulfate, cetyltrimethylammonium chloride, quaternium-83, behenylamidopropyl-2,3-dihydroxypropylmethylammonylammonium chloride and ammonium chloride.
[0350] Other suitable cationic surfactants are estersquats which are composed of quaternary ammonium having fatty acid chains containing ester bonds.
[0351] Among the preferred cationic surfactants, mention may be made of the compounds of formula (I) chosen from cetrimonium chloride, behentrimony chloride, Behenila PG-Trimonium chloride, dicetyl dimonium chloride, and mixtures thereof.
[0352] Other preferred cationic surfactants are esters chosen from Dimonium Chloride and Dibehenoylethyl, Dimonium Chloride and Dipalmitoylethyl, Dimonium Chloride and Diestearoylethyl, PG-Dimonium Chloride and Diseboíla, hydroxyethylammonium methoxylethylmethyl sulfate, dipalmitoethyl and methyl hydroxylethylammonium, dipalmitoethylmethyl ethoxyl. their mixtures.
[0353] Without being limited by any theory, it is believed that the presence of an ionic surfactant, particularly when manufacturing the dispersion, reduces or minimizes the aggregation of particles in the aqueous dispersion of the present disclosure. Thus, the surfactant mixture comprising at least one ionic surfactant acts as a dispersant to facilitate uniform dispersion of the particles and to enhance the stabilization of the dispersion itself.
[0354] In certain embodiments of the present disclosure, the surfactant mixture contains at least one nonionic surfactant and at least one ionic surfactant comprising at least one anionic surfactant.
[0355] In other embodiments, the surfactant mixture contains at least one nonionic surfactant and at least one ionic surfactant comprising at least one cationic surfactant.
[0356] In preferred embodiments, the surfactant mixture contains at least one nonionic surfactant and at least one ionic surfactant comprising at least one anionic surfactant in which the surfactant mixture is free of cationic surfactants.
[0357] In still other preferred embodiments, the surfactant mixture contains at least one nonionic surfactant and at least one ionic surfactant comprising at least one cationic surfactant in which the surfactant mixture is free of anionic surfactants.
[0358] Those skilled in the art will select the best fit between the block copolymer of styrene, wax and / or oil, and surfactant in terms of type and% to obtain the best dispersions. For example, silicone waxes are generally considered to be more compatible with silicone-based surfactants.
[0359] In certain preferred embodiments, the surfactant blend of the present disclosure is essentially free of amphoteric surfactants. The term "essentially free of amphoteric surfactants" as used herein means "without free amphoteric surfactants" in the surfactant mixture. "Without free amphoteric surfactants" used here means that amphoteric surfactants are not added as a separate component, per se, to the surfactant mix. "Free amphoteric surfactants", as used herein, does not include amphoteric surfactants that may be present as a component in a raw material or ingredient that is added during the production process of the aqueous dispersion or composition of the invention. "Free amphoteric surfactants" as used herein also does not include amphoteric surfactants that can be added as an additional component to the composition of the invention to the aqueous dispersion, after the dispersion particles are prepared.
[0360] Amphoteric surfactants include, but are not limited to, aliphatic secondary or tertiary amine derivatives, in which the aliphatic group is a straight or branched chain containing 8 to 22 carbon atoms and containing at least one water-soluble anion group , such as, as an example, a carboxylate, sulfonate, sulfate, phosphate or phosphonate group; mention may also be made of alkyl (C8-C20) betaines, sulfobetaines, alkyl (C8-C20) -starch-alkyl (C6-C8) -betaines or alkyl (C8-C20) -starch-alkyl (C6-C8) - sulfobetaines; and their mixtures.
[0361] Among the amine derivatives that may be mentioned are amphocarboxyglycinate compounds and amphocarboxypropionate compounds, in particular, disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caprylamphodiacetate, disodium capranamododiacylate, disodium cocoanphodipropionate, lauroamphiodionic acid, lauro and cocoamphodipropionic acid, (C8-C20) betaine, alkyl (C8-C20) amidoalkyl (C6-C8) betaines and alkylamphodiacetates.
[0362] In the field of cosmetics, dermatology, personal care and pharmaceuticals, the particles and / or dispersions according to the present invention can be used as vehicles for at least one active substance for the preparation of (a) cosmetic composition (s) (s) and / or dermatological (s) and / or personal care and / or pharmaceutical (s).
[0363] Thus, an object of the present invention is also compositions, such as cosmetic or dermatological or personal care or pharmaceutical compositions, comprising at least some particles and / or at least one dispersion as defined above.
[0364] Process for Obtaining Aqueous Dispersions (Dispersion Protocol)
[0365] The aqueous dispersions of the present disclosure can be obtained by means of a process comprising at least the steps as follows:
[0366] emulsifying a mixture containing an oil gelling agent comprising at least one styrene block copolymer; a grease substance selected from at least one wax having a melting point greater than 35 ° C, at least one oil, and mixtures thereof; a mixture of surfactants comprising a nonionic surfactant and an ionic surfactant; water, and optionally at least one additional ingredient selected from an oil gelling agent other than an oil gelling agent comprising at least one styrene block copolymer, colorants, sun protection agents, volatile solvents, a wax having a melting point of 35 ° C or less, fragrance oils, emulsifying polymers, silica, talc, clays, and mixtures thereof, at an emulsifying temperature above the melting point of at least one wax. If two or more waxes are used, the emulsification temperature must be higher than the melting point of the wax with the highest or highest melting point,
[0367] subjecting the mixture to a process leading to the production of particles, at a temperature of at least 5 to 10 ° above the emulsification temperature of the mixture used in the previous step, and
[0368] cooling of the dispersion thus obtained.
[0369] It should be noted that the combination of ingredients in the first step of the process and the execution of the second step with heating are necessary cumulative conditions for obtaining the particles according to the invention in a controlled way, resulting in particles that are calibrated for certain properties (eg, melting point, size, and shape). Thus, the nature of the process exerted in the mixture of the styrene / grease-surfactant-water block copolymer determines the properties of the particles to be obtained.
[0370] The process according to the invention may, where appropriate, also include a step consisting of diluting the continuous phase of the mixture before the cooling step.
[0371] For the purposes of the present invention, the term "process leading to the production of particles" is intended to denote a shear-type action. This shearing action can be achieved by mixing the styrene / grease-surfactant-water block copolymer mixture using a homogenizer / mixer at a specified speed.
[0372] Thus, in one embodiment, the particles of the aqueous dispersion of the present disclosure are obtained by a process according to the steps of:
[0373] heating a selected grease substance from at least one wax having a melting point greater than 35 ° C, at least one oil, and mixtures thereof, in order to melt or soften the grease substance;
[0374] optional heating with the grease substance in (1) of at least one additional ingredient selected from an oil gelling agent other than an oil gelling agent comprising at least one styrene block copolymer, dyes, protection agents solar, a wax having a melting point of 35 ° C or less, emulsifying polymers, fragrance oils other than at least one oil in (1), silica, talc, clays, and mixtures thereof;
[0375] heating an oil gelling agent comprising at least one styrene block copolymer;
[0376] mixing the grease substance in (1) or (2) with the gelling agent in oil (3) to form a mixture of styrene block copolymer of gelling agent in oil / grease;
[0377] heating a surfactant mixture comprising at least one nonionic surfactant and at least one ionic surfactant and water to form a surfactant / water combination;
[0378] mixing, above room temperature, the styrene block copolymer of gelling agent in oil / grease with the surfactant / water combination, by a shearing action to form the aqueous dispersion; and
[0379] cooling the aqueous dispersion in (6);
[0380] wherein, when the grease substance comprises at least one wax having a melting point greater than 35 ° C, the grease substance is heated to a temperature higher than the melting point of at least one wax.
[0381] In one embodiment, the grease substance in the process described above comprises at least one wax having a melting point greater than 35 ° C and the heating step in (1) is conducted at a temperature above the melting point of the hair. less a wax.
[0382] In one embodiment, the heating step (3) in the process described above is carried out at a temperature of at least about 120 ° C.
[0383] In one embodiment, the mixing step in (4) in the process described above is carried out for at least 30 minutes, or from about 30 minutes to about 120 minutes.
[0384] In another embodiment, the mixing step in (4) in the process described above is carried out at a temperature (emulsification temperature) of at least 80 ° C, such as up to about 150 ° C. The emulsification temperature is preferably above 40 ° C and preferably below 150 ° C, more preferably below 95 ° C.
[0385] In one embodiment, the shearing action in step (6) in the process described above is carried out at a speed ranging from about 3000 to about 9000 rpm, such as at about 3000 rpm, or about 4000 rpm , or about 5000 rpm, or about 6000 rpm or about 7000 rpm, or about 8000 rpm or about 9000 rpm. In other embodiments, the shearing action is performed at a speed greater than 9000 rpm.
[0386] In one embodiment, the shearing action in step (6) in the process described above is performed above room temperature, such as from about 50 ° C to about 80 ° C, or as from about 60 ° At about 70 ° C.
[0387] When using different mixing speeds, it is possible to obtain different particle size distributions based on the volume having peaks in the range of 1 μm or greater to about 100 μm, such as from about 20 μm to about 70 μm, or between about 40 μm to about 65 μm, or between about 45 μm to about 65 μm, or between 1 μm and above to about 20 μm. It is also possible to use other shear processes such as those described and referred to in US2006 / 0292095 and US2006 / 0263438.
[0388] The quantities and types of surfactants in and / or the weight proportions of the surfactants in relation to each other, the mixture of surfactants and / or the quantities and / or types of styrene block copolymers and fatty substances used can also result in particles of different particle sizes such as those listed above.
[0389] In certain embodiments, the nonionic surfactant will be employed in an amount of about 60% to about 95% by weight, or from about 65% to about 90% by weight, or from about 70% to about 90% by weight, including all intervals and sub-intervals between them and based on the total weight of the surfactant mixture of the present disclosure.
[0390] In one embodiment, the at least one ionic surfactant will be employed in an amount of about 5% to about 40% by weight, preferably from about 5% to 30% by weight, such as about 5 % to about 20% by weight, including all intervals and sub-intervals between them and based on the total weight of the surfactant mixture of the present disclosure.
[0391] Preferably, the mixture of surfactants, that is, the combined amount of at least one nonionic surfactant and at least one ionic surfactant will be employed in an amount of about 1.0% to about 5% by weight, or as from about 1.5% to about 3.5% by weight, or as from about 1.5% to about 3% by weight, including all intervals and sub-intervals between and on the basis of in the total weight of the aqueous dispersion.
[0392] Thus, according to the above process, the dispersions of the present disclosure comprise particles that are calibrated for specific properties. Furthermore, these particles are preferably free of volatile solvents.
[0393] Furthermore, according to the above process, other ingredients, such as active ingredients, polymers, and other additional ingredients as described above, can be added during the preparation of the dispersion.
[0394] Dispersion:
[0395] According to the process described above, the particles are preferably obtained as a dispersion in a continuous aqueous and / or water-soluble phase. Such a dispersion can also be described as an oil-in-water emulsion or an oil-in-water dispersion.
[0396] The particles according to the invention do not advantageously aggregate in the dispersion in which they are obtained, and their granulometric specificities in terms of size and distribution index are advantageously preserved therein.
[0397] The continuous aqueous and / or water-soluble phase that is suitable for use in the dispersions of the invention preferably comprises water, such as demineralized water, or a combination of water and a water-soluble organic solvent.
[0398] Among the water-soluble solvents that can be used in the dispersions according to the invention, mention may be made especially of monoalcohols containing 3+ carbon atoms, glycols, glycol ethers, and polyols, for example glycerol, ethylene glycol, propylene glycol, butylene glycol, caprylyl glycol, hexylene glycol, dipropylene glycol, diethylene glycol, xylitol, sorbitol, mannitol, maltitol, and polyethylene glycol or mixtures thereof, C3 and C4 ketones, and C2-C4 aldehydes and their mixtures.
[0399] For the purposes of the present invention, the term "water-soluble solvent" is intended to denote a compound that is liquid at room temperature and miscible in water (miscibility in water of more than 50% by weight at 25 ° C and atmospheric pressure). COMPOSITIONS
[0400] The aqueous dispersions of the present disclosure can be formulated into compositions in various galenic forms.
[0401] The compositions containing the aqueous dispersions of the present disclosure comprise a carrier (or solvent) that includes, but is not limited to at least one of water, volatile and non-volatile organic solvents, silicones, polyols, glycols, glycol ethers, non-silicone oils, and mixtures thereof.
[0402] In preferred embodiments, the vehicle is a cosmetically, dermatologically or physiologically acceptable vehicle that is non-toxic, in which the compositions can be applied to keratinous substrates such as the skin, lips, hair, scalp, eyelashes, eyebrows, nails or any other skin region of the body. The cosmetically, dermatologically or physiologically acceptable carrier can comprise water and / or one or more of the organic solvents, chosen from lower monoalcohols, such as those containing from about 1 to 5 carbon atoms, for example ethanol and isopropanol; glycol ethers; polyols, including glycols, such as those containing from about 2 to 8 carbon atoms, for example propylene glycol, ethylene glycol, 1,3-butylene glycol, dipropylene glycol, hexylene glycol, and glycerin; hydrocarbons and non-silicone oils, such as, for example, isododecane and mineral oil; silicones, such as dimethicone, cyclomethicone and cyclopentasiloxane; and their mixtures.
[0403] When the organic solvent is a volatile solvent, the amount of the volatile organic solvent generally ranges from more than 0 (eg, about 0.01%) to about 99%, and in some embodiments more from 0% to about 55%, and in some embodiments from more than 0% to about 2% by weight, based on the total weight of the composition. In certain embodiments, the amount of volatile organic solvent does not exceed 55% by weight, based on the total weight of the composition. In other embodiments, the amount of volatile organic solvent does not exceed 5% by weight, based on the total weight of the composition. In still other embodiments, the compositions of the present disclosure are essentially free of volatile organic solvents. The term "essentially free of organic solvents", as used herein, means "no free organic solvent". "No organic solvent", here, means that the organic solvent is not added as a separate component, alone, during the manufacturing process of the composition of the invention. "Free organic solvent", as used herein, does not include the organic solvent that may be present as a component in a raw material or ingredient that is added during the manufacturing process of the composition of the invention.
[0404] The vehicle can be employed in an amount of about 70% to about 99% by weight, or as about 75% to about 95% by weight, or as about 80% to about 90% by weight, including all intervals and sub-intervals between them, and based on the total weight of the composition.
[0405] The aqueous dispersion of the present disclosure can be present in one of the compositions of the present disclosure in an amount ranging from about 1% to about 30% by weight, preferably from about 2% to about 20% by weight. weight, more preferably from about 3% to about 15% by weight, even more preferably from about 5% to about 10% by weight, including all intervals and sub-intervals between them and based on the total weight of the composition .
[0406] In some embodiments, the aqueous dispersion of the present disclosure may be present in one of the compositions of the present disclosure in an amount ranging from about 0.5% to about 20% by weight, preferably about 1% to about 10% by weight, or as from about 1% to about 5% by weight, or as from about 1% to about 3% by weight, including all intervals and sub-intervals between them and based on the total weight of the composition.
[0407] In some embodiments, the amount of the grease phase comprising the gelling oil / grease combination in the compositions of the present disclosure is in the range of less than 1% to about 40% by weight, such as from about 1 % to about 40% by weight, or as from about 5% to about 35% by weight, or as from about 10% to about 30% by weight, including all intervals and sub-intervals between them and based on the total weight of the final composition.
[0408] In at least some exemplary embodiments, the particles of the present invention are not soluble in the vehicle or solvent of the composition, and thus remain in the form of particles, even after evaporation of the solvent. For example, in embodiments where the composition comprises alcohol as a carrier, the particles may remain in the form of particles, after evaporation of the alcohol, such as once the composition is applied to a substrate.
[0409] In one embodiment, the at least one additional ingredient that can comprise the particles of the present invention is selected from sunscreen agents such that when the aqueous dispersion is formulated or included in a composition containing the vehicle described above , a photoprotective composition is obtained. Thus, another embodiment of the present invention is a method of photoprotection of a keratinous substrate, such as skin or hair or scalp, comprising application to said substrate of the photoprotective composition.
[0410] In one embodiment, the at least one additional ingredient is selected from dyes in such a way that, when the aqueous dispersion is formulated or included in a composition containing the vehicle described above, a make-up or dye composition, such as a temporary hair color is obtained. Thus, another embodiment of the present invention is a method of coloring or makeup a keratinous substrate such as skin or hair, comprising applying to the substrate said makeup or coloring composition.
[0411] Another particular embodiment of the present invention is an aqueous dispersion comprising: particles with a particle size distribution based on volume with peaks in the range equal to or greater than 1 μm to about 70 μm and in which the particles comprise: i. an oil gelling agent comprising at least one styrene block copolymer; and ii. a grease substance comprising at least one fragrance oil; and a mixture of surfactants comprising: at least one nonionic surfactant; and at least one ionic surfactant; and water.
[0412] When the particles of the present disclosure comprise a fragrance oil, the particles can contribute to provide a controlled release fragrance effect in such a way that the fragrance effect can be transmitted over a certain period of time and therefore it can be a more lasting effect. At the same time, such particles comprising fragrance oils can provide gloss to a substrate in contact with the dispersion described above or a composition containing the dispersion described above.
[0413] Other embodiments of the present invention are compositions containing any of the aqueous dispersions described above and a vehicle comprising water, volatile organic solvents, non-volatile organic solvents, silicones, non-silicone oils, and mixtures thereof. AUXILIARY AGENT
[0414] Aqueous dispersions and compositions comprising the aqueous dispersion of the present disclosure can additionally contain any auxiliary agent selected from liquid lipids / oils, waxes, film forming polymers, rheology modifying agents, wetting agents and moisturizing agents, emulsifiers, structuring agents, propellants, surfactants, shine agents, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and their mixtures.
[0415] The lipids and oils may be the same or may be different from the grease substance comprising the particles of the aqueous dispersion.
[0416] Film-forming polymers include, but are not limited to, synthetic polymers, free radical type or polycondensate type, naturally occurring polymers and mixtures thereof, in particular acrylic polymers, polyurethanes, polyesters, polyamides, polyureas and polymers based on cellulose, for example nitrocellulose.
[0417] Representative rheology modifiers include, but are not limited to, thickening agents, and can be polymeric and non-polymeric. Exemplary polymeric thickeners include various native gums. Representative non-polymeric thickeners include oxyethylene molecules and especially ethoxylated alkyl or acyl derivatives of polyols.
[0418] The rheology modifier (s) include naturally occurring polymers and synthetic polymers, including, but not limited to, associative polymers, non-associative thickening polymers, and water-soluble thickening polymers. They can be chosen from nonionic, anionic, cationic, amphoteric polymers, including acrylate or acrylic-based polymers, polysaccharides, polyamine compounds, and nonionic, anionic, cationic and amphoteric amphiphilic polymers.
[0419] Suitable rheology modifiers include, but are not limited to, acrylate and carbomer copolymers, as well as cellulose-based thickeners (e.g., hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, cationic cellulose ether derivatives, cellulose derivatives quaternized, etc.), guar gum and its derivatives (eg hydroxypropyl guar, cationic guar derivatives, etc.), gums such as microbial gums (eg, xanthan gum, scleroglucan gum, etc. .), gums derived from plant exudates (eg, gum arabic, ghatti gum, karaya gum, tragacanth gum, carrageen gum, agar gum and carob gum), pectins, alginates, and starches, crosslinked acrylic acid homopolymer or of acrylamidopropane-sulfonic acid.
[0420] The rheology modifiers of the present disclosure can also be used as film forming agents, depending on the amount employed.
[0421] Suitable examples of the rheology modifying agents of the present disclosure can be chosen from cross-linked copolymers of (meth) acrylic acid and / or (C1-C6) alkyl esters and from associative acrylic polymers.
[0422] Examples of rheology modifiers of the present disclosure are polyacrylate-3, known commercially under the trade name Viscophobe DB-100 and sold by The Dow Chemical Company, carbomers, known commercially under the trade name Carbopol polymers and sold by Lubrizol Advance Materials, Inc, cross polymers acrylates / C10-30 alkyl acrylate, commercially known by the trade names of polymers Pemulen TR-1 and Pemulen TR-2 and sold by Lubrizol Advance Materials, Inc, commercially known AMP acrylate / allyl methacrylate copolymer under the trade name Polymer Fixate G-100 and sold by Lubrizol Advance Materials, Inc., polyvinylpyrrolidone, commercially known under the trade name PVP and sold by International Specialty Products, and a cross-linked copolymer of methacrylic acid / ethyl acrylate, also known as a copolymer of acrylates in aqueous dispersion, such as the polymer of slightly cross-linked alkaline-expandable acrylate known by the name NCI copolymer of acrylates and sold by Lubrizol, under the trade name of Carbopol® Aqua SF-1 as an aqueous dispersion comprising about 30% by weight of total solids or active material.
[0423] The rheology modifier is typically present in an amount in the range of about 0.01% to about 10% by weight, in some embodiments from about 0.1% to about 5% by weight, based on in the total weight of the composition.
[0424] Suitable examples of humectants and moisturizing agents include, but are not limited to, urea, hydroxyethyl urea, polyols such as glycerin, and glycosaminoglycans (GAGs). Suitable examples of glycosaminoglycans are hyaluronic acid or hyaluronan (HA), heparan sulphate (HS), heparin (HP), chondroytin, chondroitin sulphate (CS), chondroitin 4-sulphate or chondroitin sulphate (CSA), 6- chondroycin sulphate or chondroycin C sulphate (CSC), dermatan sulphate or chondroycin B sulphate (CSB) and keratan sulphate (KS).
[0425] Representative examples of propellants include n-butane, isobutane, propane, dimethyl ether, halogenated C2-C5 hydrocarbons, for example, 1,1-difluoroethane, difluoroethane, chlorodifluoroethane, dichlorodifluoromethane, chlorodifluoromethane, trichlorofluoromethane, hydrofluoromethane, hydrofluoromethane, hydrofluoromethane, hydrofluoromethane, hydrofluoromethane. The amount of the propellant generally ranges from about 1% to about 55%, and in some embodiments from about 1% to about 35% by weight, and in some embodiments from about 1 to about 20% by weight, and in some embodiments from about 2 to about 15% by weight, based on the total weight of the composition.
[0426] Surfactants used as auxiliary agents can be chosen from the anionic, cationic, non-ionic and amphoteric surfactants previously described.
[0427] The glossing agents can be chosen from silicones, oils, ethoxylated oils, fats, esters, transesters, hydrocarbons, quats and their mixtures.
[0428] The aqueous dispersions of the present disclosure may additionally comprise one or more additives chosen from pearlescent agents, opacifying agents, fragrances, sequestering agents, softeners, defoamers, wetting agents, propagating agents, dispersants, plasticizers, mineral fillers, colloidal minerals, peptizers, preservatives, and pH adjusters.
[0429] Compositions comprising the aqueous dispersions of the present disclosure may be in the form of an aqueous system, a simple or complex emulsion (types of oil-in-water (o / w), water-in-oil (w / o emulsion) ), silicone-in-water and / or water-in-silicone) such as a cream or a milk, in the form of a gel or a cream gel, or in the form of a solid lotion, powder or tube, and they can optionally be packaged as an aerosol and can be in the form of a mousse or a spray. The mousse or spray may contain propellants such as those listed above.
[0430] Spray compositions, especially aerosols, typically contain at least one volatile organic compound (VOC). For essentially ecological reasons and government regulations in several countries, it is sought or even necessary to reduce the amount of volatile organic compounds (VOC) present in the composition. To reduce the amount of VOC and to obtain an aerosol device with a low VOC content, organic solvents, for example ethanol and dimethyl ether, are partially replaced by water.
[0431] When the compositions of the present disclosure are emulsions, they will generally contain at least one emulsifier / surfactant chosen from amphoteric, anionic, cationic and non-ionic emulsifiers or surfactants, alone or as a mixture.
[0432] In another embodiment of the invention, the compositions in question are formulated as water-in-silicone (W / Si) or silicone-in-water (Si / W) emulsions in which the continuous oil phase comprises at least one oil of silicone. For water-in-silicone emulsions, silicone oils are preferably present in a proportion of at least 5% and preferably in the range of 10% to 45% by weight based on the total weight of the emulsion. The grease phase of the water-in-oil emulsions according to the invention can additionally comprise oil (s) comprising hydrocarbons up to 40% by weight with respect to the total weight of the grease phase of the emulsion.
[0433] For W / Si emulsions, examples of emulsifiers generally include polyether modified silicones having a long chain of dimethyl siloxane units that carry polyethoxy-polypropoxy units on the chain and at the ends. Examples include dimethicone PEG / PPG-18/18 of cyclopentasiloxane, Dimethicone of PEG-12, and Dimethicone PEG / PPG-19/19 sold by Dow Corning under the designation Dow Corning® BY 11-030.
[0434] In various embodiments, the composition described herein has a pH in the range of about 2 to about 9, such as about 3 to about 8, or about 4 to about 7.
[0435] The aqueous dispersion and compositions of the present disclosure can be applied to substrates chosen from keratinous substrates such as skin and hair, hard surfaces, such as wood, glass, resin, and metal, and other non-keratinous substrates such as synthetic fibers, fabric and paper.
[0436] In other embodiments, the application of an external stimulus, such as heat to a treated substrate, may be desirable or necessary in order to provide additional benefits to the treated substrate.
[0437] Thus, in certain embodiments, a method of coating a substrate is provided, wherein said method involves applying to the substrate the aqueous dispersion of the present disclosure and a vehicle, and heating the substrate. Preferably, the heat applied to the substrate is at a temperature higher than the melting point of fatty substances, such as wax, which comprises the particles of the aqueous dispersion. If two or more waxes comprise the wax particles, the heat applied to the substrate must be at a temperature higher than the melting point of the wax with the highest melting point.
[0438] Tools and equipment / heating devices can be used as a means to distribute heat or a high temperature to the substrate. Heating tools can generate heat through electric current or heating lamps.
[0439] Although it is not intended to be limited by any particular theory, it is believed that when the heat applied to the substrate is above the melting point of the fatty substances, for example, the wax, which comprises the particles of the dispersion aqueous, the particles are activated by heat and fuse or become liquid-like; when the temperature is reduced or after the substrate has cooled, a film or coating is formed on the substrate.
[0440] The terms "film", "coating" and "coating", as used herein in connection with the aqueous dispersion, or the composition containing the aqueous dispersion that is applied to the surface of a substrate, can be a film or coating continuous or discontinuous that adheres to the substrate, and especially to keratinous substrates.
[0441] The term "batch" means that ruptures, gaps or breaks in the film or coating are produced when an aqueous dispersion or composition containing the aqueous dispersion of the present invention is applied to a substrate.
[0442] Although it is not intended to be limited by theory, it is believed that when the aqueous dispersion or a composition containing the dispersion is spread over the substrate surface, the particles in the aqueous dispersion form particle bonds on the substrate surface of such so that a continuous or discontinuous film or coating is formed on the substrate surface.
[0443] Thus, in particularly preferred embodiments, the particles in the compositions containing the aqueous dispersion of the present disclosure are heat activated particles.
[0444] The term "heat activated" means that the particles of the aqueous dispersion of the invention can melt or soften when heat is used as a stimulus.
[0445] The substrate can be heated or exposed to heat before or after treatment of the substrate with the aqueous dispersion or the composition containing the aqueous dispersion of the present disclosure. The substrate, such as keratin fibers or textile fibers, can also be molded or shaped or positioned as desired while being heated or exposed to heat. It was surprising and unexpectedly discovered that the heat activation of the particles of the aqueous dispersion of the present invention allowed the compositions containing these dispersions to provide additional benefits to a substrate that was coated with the composition.
[0446] It was surprisingly and unexpectedly discovered that when the particles of the aqueous dispersion of the present disclosure have a particle size distribution based on the volume with peaks in the range of 1 μm or greater to about 70 μm, the compositions containing the aqueous dispersion adhered well to the substrate coated with said composition, in particular when a heating element or tool was applied on the substrate that was coated with said composition. Although it is not intended to be limited by any particular theory, it is believed that when the particles of the aqueous dispersion of the present disclosure have a particle size distribution based on the volume with peaks in the range equal to or greater than 1 μm at about 100 μm and are activated by heat, the particles do not spread too much on the substrate when fused, thus maintaining the bonds described above between the particles. As a result, the coating or film on the substrate was not sticky or pasty or brittle and left the substrate with a natural feel.
[0447] Without wishing to be bound by any particular theory, it is believed that particles with a particle size distribution based on volume with peaks in the range of about 20 to about 70 μm are more effective in creating connections between fibers, thus keeping the fibers in a desired configuration. In addition, particles in this size range lead to bonds of such small size that it is difficult to feel the film or coating on the hair.
[0448] Furthermore, it was surprisingly and unexpectedly discovered that when the particles of the aqueous dispersion of the present disclosure have a particle size distribution based on volume, with peaks in the range of 1 μm or greater at about 20 μm, the compositions containing the aqueous dispersion provided a coating or film to a substrate that had different properties or that had a different feel to the touch. For example, when these compositions are in the form of a mascara, the mascara can give definition to the eyelashes and provide comfort, separation and / or lengthening properties of the eyelashes, without or with little product agglomeration on the eyelashes and an improved adhesion of the eyelashes. eyelash product, in particular when a heating element or tool is applied on the eyelashes that have been coated with the mascara product.
[0449] Although it is not intended to be limited by any particular theory, it is believed that when the particles of the aqueous dispersion of the present disclosure have a particle size distribution based on volume, with peaks in the range equal to or greater than than 1 μm to about 20 μm, a greater coverage of the substrate is obtained compared to that produced by particles whose peaks of particle size distribution based on volume are in the range of 20-70 μm. The greater coverage gives an impression of a larger diameter of the fiber (volumizing / thickening). It is also believed that the increased surface area of such particles in relation to the larger particles can provide compositions containing such particles with oil control capacity, placing more oil control active ingredients in contact with tallow.
[0450] Compositions containing the aqueous dispersion of the present disclosure may in particular constitute cosmetic, personal care, dermatological, pharmaceutical products, such as hair styling products, hair straightening / relaxation, curly / permanent / waving hair, hair care hair and hair / skin cleaners such as scalp care products, shampoos, conditioners and liquid soaps, sun protection products and skin care and treatment products such as moisturizers and makeup products such as lipsticks, mascara, foundation, and Eye shadow.
[0451] In at least some exemplary embodiments, the compositions are in the form of hair styling compositions, in any form, such as, for example, a gel, cream, foam, lotion, emulsion, or liquid which can be sprayed on or otherwise applied to the hair. In various embodiments, the composition can be supplied in the form of a gel, a mousse or a spray. In at least certain modalities, the composition can be applied to the hair by first applying it to the hands, and then contacting the hair with the hands; in other embodiments, the composition can be applied directly to the hair, such as by spraying. The compositions can, in various modalities, be applied to the hair as a treatment with length of stay.
[0452] In several modalities, the application of an external stimulus, such as heat, may be desirable as part of the hair styling process. As an example only, before, during, or after the composition is applied to wet or dry hair, the hair can be further treated with an external stimulus, for example with heat in the range of about 25 ° C to about 250 ° Ç. In at least some embodiments, the hair can also be shaped or positioned as desired, while exposed to external stimuli, such as when heated or exposed to heat.
[0453] Professional and consumer heating tools can be used as a means to distribute heat or a high temperature to the hair. Depending on the desired style, or the shape of the hair, these tools include, but are not limited to, heaters, dryers, flat iron, hot combs, hot curler sets, steam helmet dryers, heated tongs, heated curlers, wands / heated brushes, and cover dryers or combinations thereof.
[0454] As described, the compositions according to the development can impart a film on a substrate, such as on the hair or hand during or after application to the hair. A film formed by the composition can, surprisingly, have a clean, non-sticky feel, as with traditional hair care and styling products. Also surprisingly, the composition can give a film on the hair that leaves the hair relatively natural with a clean feel, but still with a flexible coating, leaving little or no residue, allowing the hair to be loose and bouncy, with little or no frizz. or flaking, being able to transmit a relatively high definition with individualized waves, control of style, volume and brightness, and / or being able to allow a retention and memory of style of relative long duration. Furthermore, in at least certain embodiments according to the disclosure, the compositions are not sticky or pasty. A user of hair compositions according to the various modalities described here can thus feel that the composition is not noticeable or "invisible", yet effectively shaping and / or retaining the hair. In addition, the compositions can have effective hair styling and / or retention properties, even in conditions of high or relatively high humidity. In at least certain embodiments according to the disclosure, the compositions can be quick-drying, which can allow a drying and / or shaping time to be reduced, as well as improving the ease of shaping and curling retention even further. .
[0455] Furthermore, as described, compositions prepared according to different modalities can provide varying degrees of retention to be transmitted to a hair styling. As a non-limiting example only, in order to obtain a spiky appearance in very short hair, a high level of styling retention may be desirable. Or, as another non-limiting example, in order to obtain a loose look or to maintain hair curls for medium-length or long-length hair, a light to medium level of styling retention may be desirable. By changing the amounts by weight of the components comprising the particles of the invention and / or by using particles of particle size distributions based on volume, with peaks at variable intervals (for example, equal to or greater than 1 μm at about 100 μm, or from about 1 to about 20 μm), it is possible to formulate compositions with high levels of modeling retention, medium to high levels of modeling retention, average levels of modeling retention, or light to medium levels modeling retention.
[0456] In at least certain modalities, a film formed by the compositions described here can be clear and / or stable. In such modalities, phase separation and dramatic aggregation are minimized.
[0457] In addition, hair styled or treated with compositions according to the disclosure may, in at least some exemplary embodiments, be hydrophobic, and / or may appear less frizzy and / or less prone to breakage, compared to submitted hair under the same conditions, but not having been modeled or treated with a composition according to the development.
[0458] It should be noted, however, that the compositions and films, as well as the hair to which the composition or film was applied, according to the disclosure, may not have one or more of the properties referenced herein, being intended however to be included in the scope of the disclosure.
[0459] Also disclosed herein are methods for styling hair, said methods comprising applying a composition according to the development on the hair, either before, during, or after styling the hair. One or more steps of treating the hair with an external stimulus, such as heat, before, during, or after the composition has been applied to the hair are also contemplated.
[0460] Thus, in some embodiments, a method of shaping the hair is provided, wherein said method includes a step of applying to the hair, a composition containing the aqueous dispersion of the present disclosure, and a cosmetically acceptable carrier and a step of applying heat to the hair. Said method may additionally include a hair shaping step, using a hair shaping means.
[0461] The term "hair shaping" as used here can also mean a change in the configuration of the hair.
[0462] The method described above allows you to mold / reshape or reposition the hair on the head, such as to straighten the hair, curl the hair, redefine the curves of the hair, or add volume to the hair, and repeat the steps of that method as often as desired and without the need to reapply the composition and / or re-moisten the hair.
[0463] In particularly preferred embodiments, a hair shaping medium is used. Said means can be part of the heating tool or it can be a separate device or tool such as a brush or comb or curling device. The hair shaping means can also comprise the passage of fingers or hand through the hair.
[0464] The steps of the method described above for shaping the hair can be carried out in any order. For example, the composition containing the aqueous dispersion can first be applied to the hair, followed by application of heat to the hair, then followed by shaping the hair using a hair shaping medium. In another example, heat is first applied to the hair, followed by the step of applying the composition to the hair, then followed by the hair shaping step using a hair shaping medium. In yet another example, the hair is first shaped, using a hair shaping medium, followed by applying the composition to the hair and then applying heat to the hair. In other examples, hair can be shaped first using a hair shaping medium, followed by applying heat to the hair and then applying the composition to the hair and allowing the shape of the hair to hold in place as the temperature reaches room temperature.
[0465] The compositions containing the aqueous dispersion of the present disclosure can also be in the form of a composition for treating or skin care for greasy or oily hair and skin (including the scalp). In particular, such compositions can reduce or minimize the greasy / oily sensation or appearance on the skin, scalp or hair.
[0466] Compositions containing the aqueous dispersion of the present disclosure can be used to protect the color of artificially colored hair, making the color more resistant to fading or more resistant to washing (that is, the color stays longer in the hair ).
[0467] The compositions containing the aqueous dispersion of the present disclosure can also be in the form of household and industrial products.
[0468] The compositions of the present invention can be provided in a plethora of galenic forms, including but not limited to creams, liquid, gel, gel in cream, lotion, foam, serum, paste, semi-solid, solid tube, gel in tube , or a powder, and can be in the form of a mousse or a spray, and can optionally be packaged as an aerosol, prepared according to the usual methods.
[0469] It is to be understood that both the previous description and the examples that follow are only exemplary and explanatory, and are not to be interpreted as restricting the revelation. In addition, it should be understood that several resources and / or characteristics of different modalities described here can be combined with each other. It is, therefore, to be understood that numerous modifications can be made to the illustrative modalities and that other provisions can be conceived without departing from the scope of the disclosure. Other modalities will be evident to those skilled in the art from considering the description and practice of the various exemplary modalities described here.
[0470] Unless otherwise indicated, all numbers used in the specification and claims, should be understood as being modified in all cases by the term "about", regardless of so indicated. The term "about", as it modifies the numbers referred to here, is understood to indicate a difference of 10% or less from the established number, such as 9% or less, such as 8% or less, as 7% or less, such as 6% or less, such as 5% or less, such as 4% or less, such as 3% or less, such as 2% or less, or such as 1% or less, in several exemplary modalities. Thus, by way of example only, in a modality in which "about" indicates a difference of 10% or less, the phrase "about 20%" is intended to encompass a range of 18% -22%. In another exemplary modality in which "about" indicates a difference of 5% or less, the phrase "about 20%" is intended to encompass a range of 19% -21%. All of these numbers within each specified range are here expressly intended to be included in the disclosure.
[0471] It should also be understood that the precise numerical values used in the description and claims form additional disclosure modalities, and are intended to include any ranges that may be narrowed to any two end points revealed within the exemplary ranges and values provided, as well as the specific end points themselves. Efforts have been made to ensure the accuracy of the numerical values disclosed here. Any measured numerical value, however, can inherently contain certain errors resulting from the standard deviation found in the respective measurement technique.
[0472] It is to be understood that compositions according to various developmental modalities form a film when applied to a substrate. However, the various properties of the film described herein are intended to include any film provided by the compositions according to the development, regardless of whether the film is attached or attached to the substrate, or not.
[0473] The following examples of dispersions and compositions are intended to illustrate the invention without limiting the scope as a result. The percentages are given on a weight basis. EXAMPLES
[0474] Example I:
[0475] Based on the Dispersion Protocol described above, the aqueous dispersion and compositions containing the aqueous dispersion of the invention were prepared / manufactured as follows: A. Aqueous surfactant solution: (a) A mixture of surfactants was prepared by adding gram quantities of nonionic surfactant (s) and ionic surfactant (s) in a container. (b) Deionized water was added in an amount such that the final weight of the aqueous dispersion (including the weight of the wax) was 100 grams. (c) The surfactant solution was heated to a temperature within the range of about 80 ° C to about 85 ° C in a water bath. B. Preparation of the block copolymer / grease mixture: the grease substances have been melted and heated to a temperature suitable for mixing with the polymer (120 ° C, in general, for Kraton SBC materials). The polymer was then added to the melted / melted grease substance and the mixture was mixed while maintaining the temperature until a homogeneous mixture was formed (30-120 minutes). The mixture is then cooled to the emulsification temperature (80-85 ° C). C. Emulsification process
[0476] While the aqueous surfactant solution was still at an elevated temperature (above room temperature, such as from about 65 ° C to about 70 ° C), the solution was mixed using a homogenizer / mixer (eg ., Silverson homogenizer) at a speed in the range of about 3000 to about 9000 rpm.
[0477] The heated mixture (still at a temperature above room temperature) was added to the surfactant solution near the homogenizer mixing head during mixing.
[0478] As soon as the heated mixture was added, mixing was continued for at least 5 minutes.
[0479] The homogenizer paddle was removed and the emulsion (aqueous dispersion) was mixed and cooled slightly to room temperature to form the polymer / wax and / or oil particles. The dispersion was then transferred to another container, or when a composition containing the aqueous dispersion is to be made, then other ingredients comprising the composition are combined in that phase and an aliquot of the aqueous dispersion is added to the composition.
[0480] The dispersion or composition was stored at room temperature.
[0481] The previous protocol is followed for the preparation of other aqueous dispersions of the present invention, using block copolymers of styrene and / or different fatty substances (waxes and oils) and / or surfactants at different levels.
[0482] The particle sizes of the particles comprising the dispersion were determined by measuring the particle size distribution ("PSD") based on volume using laser diffraction methods, using a Shimadzu laser diffraction particle size analyzer. SALD-7001 and quartz cuvettes having a refractive index of 1.2. Table 1 Examples of aqueous dispersions prepared according to the above Dispersion Protocol
The combination of beeswax and gelling agent is an 8% mixture of Kraton G1657 MS / 92% beeswax at 30% by weight, based on the total weight of the dispersion.
[0483] The particles in the above aqueous dispersions had spikes in their particle size distribution based on volume ("PSD") in the range of 1 µm or greater at about 100 µm.
[0484] Example II - Examples of formulations containing the aqueous dispersion
[0485] The formulas below were prepared individually from the aqueous dispersion of Example 1 by adding an aliquot of aqueous Dispersion I to the rest of the ingredients in the exemplified Formulas.
[0486] Formula 1 - Modeling lotion
Formula 2 - Pump Spraying
Formula 3 (Pump Foam)
Formula 4 (aerosol foam mousse)
Example III - HAIR TEST
[0487] The aqueous dispersion was applied over hair samples. It was observed that the hair was neither sticky nor pasty.
[0488] Formula 1 above was tested on hair of human models of Caucasian and African ethnicity and with medium to long hair. Hairdressers washed the models' hair, then styled the hair with heat using their favorite methods.
[0489] Hairdressers noticed that the use of the formula facilitated hair styling, observing in particular the superior performance on hair close to the root that had not been chemically straightened. They also found the formula very easy to apply and the formula left the hair with a clean and natural feeling with a natural level of movement, provided curling control, excellent softening and smoothing with heat and facilitated or accelerated the drying process with a dryer. In addition, the hairdresser noted that the hair treated or contacted with the formula showed a more abundant shine.
[0490] These tests demonstrated an effective shaping of the hair without leaving the hair coated with materials that give an unpleasant feeling and stick the hair unnaturally in place.
[0491] In a second study, Caucasian and Hispanic human volunteers tested Formula 1 on their hair according to their usual hair care routine. The volunteers were selected according to the type of hair and usual styling routines (that is, the use of a hairdryer, flat iron, etc.). The volunteers found that the formula facilitated hair styling, the basic requirement for a styling product. In addition, this modeling facility persisted for several days. They also found that the formula left the hair feeling natural or uncoated with a natural movement. The imposed styles were durable throughout the day. In addition, the accumulation of detectable sebum on the scalp was sufficiently reduced so that the volunteers were able to postpone their subsequent washing comfortably for a day or more, as desired.
[0492] These results demonstrated that the styling effects conferred through the composition of the invention were durable, indicating that the dispersion particles formed bonds in the hair in such a way that the particles remained in the hair, thus allowing the styling ease to persist for subsequent days, in addition to the initial styling event (applying the formula to the hair). In addition, the formula in the hair left the hair feeling uncoated and with natural movements. In addition, the formula's components gave an oil control effect, thus postponing the need to wash your hair.
[0493] It was also observed that, after treating the hair with the formulas and heating the treated hair using a dryer, the hair was easily shaped into a desired shape. After cooling it was observed that the formulas did not give a sticky or pasty sensation to the hair. In addition, during reheating of the hair with a hairdryer or other suitable devices, such as flat iron and curlers, the hair could be repositioned / remodeled in a different configuration, without having to reapply the formulas on the hair. Example IV - COMPARATIVE DATA
[0494] The properties of a mixing material obtained from combining a styrene block copolymer, such as Kraton G1657 M with a wax, have been compared with the properties obtained using wax individually. As the amount of the styrene block copolymer in the mixing material was increased, the modulus of elasticity of the films of the mixing material on the surface of the hair and the pastyness of the mixing material were measured. Pastosity Measurements
[0495] Instrument: Texture Technologies Texture Analyzer TA.XT Plus
[0496] The samples were discs formed by melting wax mixtures approximately 0.75 mm thick. The metallic ball probe was used for all tests. The standard adhesive test was used with the following modifications: Post-test speed: 0.5 mm / s; applied force: 250 g for the data in Figure 1, 100 g for the data in Figure 2.
[0497] Modulus of elasticity
[0498] Instrument: TA Q800 DMA
[0499] The samples were cut from thin discs formed by casting (approximately 0.75 mm thick), from mixtures of waxes. The strips had approximate dimensions (L x W x E) of 15 mm x 5.5 mm x 0.75 mm. The precise dimensions were measured using forceps.
[0500] The standard scanning tension measurement was used to measure the complex elasticity modulus of wax mixture strips at displacement intervals from 0.5 μm to 50 μm. The resulting data allowed the identification of stress ranges with predominantly linear behavior. The reported modulus of elasticity for each sample comes from this linear range. The measurements were repeated in triplicate. The reported values are the average; the reported error bars are standard deviations from these measurements. Table 1 individual wax and wax / polymer mixture

[0501] The results in the table above show significant differences in the values of the modulus of elasticity and the pastyness, as measured from the isolated wax in comparison with those of the wax / polymer mixture. The results are also represented by a graph in Figure 1.
[0502] The results also show an increase in the modulus of elasticity, when the polymer was combined with the wax and the modulus of elasticity increased with increasing amounts of the polymer. At the same time, the pasty value decreased when the polymer was combined with the wax and the pasty value decreased with increasing amounts of the polymer. These results indicate that the incorporation of the polymer increased the stiffness of the mixing material while reducing the pastyness of the mixing material. The increase in stiffness indicates that the stronger bonds between the particles of the aqueous dispersion can be achieved in such a way that, when the dispersion is included in a final composition, improved and durable modeling effects are obtained when the composition is applied to a substrate such as hair. At the same time, the reduced pastyness of the mixing material indicates that the final composition can give the substrate a clean and natural feel.
[0503] On the other hand, the relatively lower modulus of elasticity of the isolated beeswax indicates that the bonds between the wax and the hair are less able to maintain the shape of the fiber. In addition, the wax's pastyness translates into a less natural feeling in the hair, that is, the wax on the surface of the hair can be easily felt x the hair that was not contacted by any product left on the hair does not essentially have any pasty. Example V - Oil Tallow Study
[0504] The pastyness of a wax and the pastyness of a mixing material comprising wax and 8% styrene block copolymer were measured depending on the addition of synthetic oil tallow. The test was performed on the hair of volunteers in a beauty salon. Table 2
• Sebum added to isolated beeswax and beeswax / polymer mixture
[0505] The results in the table above are also represented by a graph in Figure 2. The results indicate that the incorporation of the block copolymer may postpone the appearance of dirtiness in part by mitigating the effects of sebum on essential physical properties. When no polymers were present, the paste increased significantly with just a small amount of oil tallow. With the polymer present, the pastyness increased slowly with the increase in the sebum content. When the level of sebum was comparable to that of the polymer, the pastyness increased at a speed comparable to that of the wax (no polymer present). These data indicate that the presence of the polymer delays the onset of dirtiness in the hair produced by the natural accumulation of sebum.
[0506] It is to be understood that the aforementioned describes preferred embodiments of the invention and that modifications can be made there without departing from the spirit or scope of the invention as presented in the claims.

权利要求:
Claims (24)
[0001]
1. Aqueous dispersion for hair styling, characterized by the fact that it comprises: a) particles with a particle size distribution based on the volume with peaks in the range of 20 μm to 70 μm and in which the particles comprise: (i) an oil gelling agent comprising at least one styrene block copolymer; and (ii) a grease substance selected from at least one wax having a melting point greater than 35 ° C, at least one oil, and mixtures thereof; b) a mixture of surfactants comprising: (i) at least one nonionic surfactant; and (ii) at least one ionic surfactant; and c) water.
[0002]
2. Aqueous dispersion according to claim 1, characterized in that at least one styrene-block copolymer is selected from a styrene-ethylene / butylene diblock copolymer, a styrene-ethylene / propylene diblock copolymer, a styrene-ethylene / butylene-styrene triblock copolymer, and mixtures thereof; preferably from a styrene-ethylene / butylene diblock copolymer, a styrene-ethylene / butylene-styrene triblock copolymer, and mixtures thereof; and more preferably the at least one styrene block copolymer comprises a styrene-ethylene / butylene diblock copolymer, and a styrene-ethylene / butylene-styrene triblock copolymer.
[0003]
Aqueous dispersion according to any one of claims 1 and 2, characterized by the fact that the grease substance is selected from at least one wax having a melting point above 35 ° C, and preferably from beeswax, hydrogenated myristyl olive esters, hydrogenated stearyl olive esters, VP / eicosene copolymer, ditrimethyloylpropane tetra stearate, silsesquioxane resin wax, and mixtures thereof.
[0004]
Aqueous dispersion according to claim 3, characterized in that the weight ratio of the amount of at least one wax, having a melting point greater than 35 ° C to the amount of at least one copolymer in styrene block is in the range of 100: 1 to 1: 100.
[0005]
Aqueous dispersion according to any of claims 3 and 4, characterized in that the at least one wax having a melting point greater than 35 ° C is present in an amount from 10% to 60% by weight , based on the total weight of the aqueous dispersion and the at least one styrene block copolymer is present in an amount from 0.1% to 15% by weight, based on the total weight of the aqueous dispersion.
[0006]
Aqueous dispersion according to either of claims 1 and 2, characterized in that the grease substance is selected from at least one oil, and preferably from C6-C16 alkanes, non-silicone oils of vegetable, mineral or synthetic origin, liquid fatty alcohols, liquid fatty acids, liquid esters of a fatty acid, liquid esters of a fatty alcohol, silicone oils, fragrance oils, and mixtures thereof.
[0007]
Aqueous dispersion according to claim 6, characterized in that the weight ratio of the amount of at least one oil to the amount of at least one styrene block copolymer is in the range of 100: 1 to 1: 100.
[0008]
Aqueous dispersion according to claim 6, characterized in that the weight ratio of at least one oil to at least one styrene block copolymer is in the range of 5: 1 to 1000: 1.
[0009]
Aqueous dispersion according to any one of claims 1 to 8, characterized in that the grease substance comprises at least one wax having a melting point greater than 35 ° C and at least one oil.
[0010]
Aqueous dispersion according to claim 9, characterized in that the amount by weight of at least one wax having a melting point greater than 35 ° C is equal to or greater than the total amount by weight of the hair at least one oil and the amount of at least one styrene block copolymer.
[0011]
Aqueous dispersion according to any one of claims 1 to 10, characterized by the fact that at least one nonionic surfactant is selected from polyethylene glycol ethers of glyceryl esters, sorbitan esters, emulsifying polymers based on silicone alkoxylated groups and / or side chains, and mixtures thereof, and more preferably PEG-30 glyceryl stearate, sorbitan palmitate, PEG / PPG-10/1 Cetyl dimethicone, Bis-PEG / PPG-16 dimethicone / 16 PEG / PPG-16/16, Bis-PEG / PPG-20/5 Dimethicone, PEG / PPG-25/4, PEG / PPG-25/4 Dimethicone, Bis- (Glyceryl / Lauryl) Glyceril Laurila, Bis-PEG / PPG-14/14 dimethicone, and mixtures thereof.
[0012]
Aqueous dispersion according to any one of claims 1 to 11, characterized by the fact that the ionic surfactant is present in an amount of from 5% to 30% by weight, based on the total weight of the surfactant mixture.
[0013]
13. Aqueous dispersion according to any one of claims 1 to 12, characterized by the fact that at least one ionic surfactant comprises at least one cationic surfactant, selected from cetrimony chloride, behentrimony chloride, dipalmitoylethyl hydroxyethylmonium methosulfate, methosulfate of hydroxyethylmonium of distearoylethyl, and mixtures thereof.
[0014]
Aqueous dispersion according to any one of claims 1 to 13, characterized in that at least one ionic surfactant comprises at least one anionic surfactant, selected from acyl glutamates, alkyl sulfates and their salts, ether alkyl sulfates and its salts, acyl glutamates, alkyl carboxyl ether, and mixtures thereof, and preferably disodium stearoyl glutamate and sodium stearoyl glutamate and mixtures thereof.
[0015]
An aqueous dispersion according to any one of claims 1 to 14, characterized in that it further comprises at least one gelling agent in oil other than a) (i) selected from semicrystalline polymers, a glutamide-based compound, a polyamide, and mixtures thereof.
[0016]
16. Process for the preparation of the aqueous dispersion, as defined in any of claims 1 to 15, characterized in that it comprises the following steps of: (1) heating the grease substance; (2) heating the gelling agent in oil comprising at least one styrene block copolymer; (3) mixing the grease substance in (1) with the gelling agent in oil (2) to form a styrene block copolymer mixture of gelling agent in oil / grease; (4) heating the surfactant mixture comprising at least one nonionic surfactant and at least one ionic surfactant and water to form a surfactant / water combination; (5) mixing the styrene block copolymer of the gelling agent in oil / grease with the combination of surfactant / water, by a shearing action to form the aqueous dispersion; and (6) cooling the aqueous dispersion in (5); wherein, when the grease substance comprises at least one wax having a melting point greater than 35 ° C, the grease substance is heated to a temperature above the melting point of at least one wax.
[0017]
17. Process according to claim 16, characterized by the fact that the shearing action is performed at a speed in the range of 3000 to 9000 rpm.
[0018]
18. Composition, characterized by the fact that it comprises: A. an aqueous dispersion, as defined in any one of claims 1 to 15; B. a vehicle comprising at least one ingredient chosen from water, volatile organic solvents, non-volatile organic solvents, silicones, non-silicone oils, and mixtures thereof; and C. optionally at least one auxiliary ingredient selected from liquid lipids / oils, waxes, film forming polymers, rheology modifying agents, wetting agents and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, agents shine, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and mixtures.
[0019]
19. Composition, according to claim 18, characterized by the fact that the aqueous dispersion is present in an amount of from 1% to 30% by weight, based on the total weight of the composition.
[0020]
20. Method of styling the hair, characterized by the fact that it comprises: (i) the application of the composition, as defined in any one of claims 1 to 15, 18 and 19 on the hair; (ii) applying heat to the hair; and (iii) optionally, the use of a means for styling the hair.
[0021]
21. Method for makeup or care for a keratinous substrate, characterized by the fact that it comprises the application of the composition, as defined in any one of claims 18 and 19 on the substrate.
[0022]
22. Method for coating a keratinous substrate, characterized in that it comprises the application of the composition, as defined in any one of claims 1 to 15, 18 and 19 on the substrate and, optionally, the application of heat to the substrate.
[0023]
23. Composition for shaping the hair, characterized by the fact that it comprises: A. an aqueous dispersion containing: a) particles with a particle size distribution based on the volume with peaks in the range of 20 μm to 70 μm and comprising: ( (i) from 0.1% to 15% by weight of an oil gelling agent comprising at least one styrene block copolymer selected from a styrene-ethylene / butylene diblock copolymer, a styrene-triblock copolymer. ethylene / butylene-styrene, and mixtures thereof; (ii) 10% to 60% by weight of a grease substance selected from at least one wax having a melting point greater than 35 ° C selected from beeswax, hydrogenated myristyl olive esters, olive esters hydrogenated stearyl, VP / eicosene copolymer, ditrimethyl ethyl propane tetra stearate, and C30-45 alkyldimethylsilyl propylsilyesiloxane, and mixtures thereof; and (iii) optionally, at least one additional ingredient selected from an oil gelling agent other than a) (i), dyes, sun protection agents, a wax having a melting point of 35 ° C or less, emulsifying polymers , fragrance oils, silicas, talc, clays, and mixtures thereof; b) from 1% to 5% by weight of a mixture of surfactants comprising: (i) at least one nonionic surfactant selected from PEG-30 glyceryl stearate, sorbitan palmitate, PEG / PPG-10 dimethicone / 1 Cetyl, Bis-PEG / PPG-16/16 PEG / PPG-16/16 Dimethicone, Bis-PEG / PPG-20/5 PEG / PPG-20/5 Dimethicone, PEG / PPG-25 / Dimethicone 4, Bis- (Glyceryl / Lauryl) Dimethicone of Glyceryl Lauryl, Bis-PEG / PPG-14/14 Dimethicone, and mixtures thereof; and (ii) at least one ionic surfactant; and c) water; all weights being based on the total weight of the aqueous dispersion; B. a vehicle comprising water, volatile organic solvents, non-volatile organic solvents, silicones, non-silicone oils, and mixtures thereof; and C. optionally at least one auxiliary ingredient selected from liquid lipids / oils, waxes, film forming polymers, rheology modifying agents, wetting agents and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, agents shine, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, plant extracts and mixtures.
[0024]
24. Composition according to claim 23, characterized by the fact that at least one ionic surfactant is an anionic surfactant selected from dipalmitoethyl hydroxyethylmonium methosulfate, distearoylethyl hydroxyethylmethane methoxylate, disodium stearyl glutamate, and stearoyl glutamate sodium and their mixtures, or a cationic surfactant selected from cetrimonium chloride, behentrimony chloride, and their mixtures.

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同族专利:

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公开号 | 公开日

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ES2682395T3|2018-09-20|

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MX2016013038A|2017-01-09|

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US20150290109A1|2015-10-15|

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US10561596B2|2020-02-18|

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JP2019081809A|2019-05-30|

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JP2017510601A|2017-04-13|

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CN106170319A|2016-11-30|

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JP6831410B2|2021-02-17|

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CN106170319B|2019-12-24|

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WO2015154928A1|2015-10-15|

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EP3129106B2|2021-10-27|

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法律状态:
2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2019-10-01| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2020-10-20| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2021-01-05| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/03/2015, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US14/251373|2014-04-11|

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US14/251,373|US10561596B2|2014-04-11|2014-04-11|Compositions and dispersions containing particles comprising a polymer|

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PCT/EP2015/054873|WO2015154928A1|2014-04-11|2015-03-10|Compositions and dispersions containing particles comprising a polymer|

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