• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    auxiliary shaving or lubricating hair removal element the present invention relates to an auxiliary shaving or hair removal element comprising a lubricating material, which comprises a water soluble polymer having an average molecular weight of at least 5,000 and a copolymer of poly (ethylene oxide) and polypropylene oxide.
    公开号:BR112015026912B1
    申请号:R112015026912-5
    申请日:2014-04-21
    公开日:2021-03-23
    发明作者:Alison Fiona Stephens；Neil John Jones；Valerie Jean Bradford；Elaine Alice Marie Baxter
    申请人:The Gillette Company；
    IPC主号:
    专利说明:

    [0001] [0001] FIELD OF THE INVENTION
    [0002] [0002] The present invention relates to auxiliary shaving and hair removal elements, specifically those for use in cartridges or devices for hair removal, the cartridges or devices themselves and methods for producing them.
    [0003] [0003] FUNDAMENTALS OF THE INVENTION
    [0004] [0004] The use of shaving or waxing aids in razors or shaving to provide lubrication benefits during shaving or waxing is known. See, for example, US Patent Nos. 7,121,754, 6,298,558, 5,711,076, 5,134,775, 6,301,785 and US Patent Publication Nos. 2009/0223057 and 2006/0225285. Such shaving or hair removal aids typically comprise a water-insoluble matrix material to provide structural integrity and a water-soluble polymer, such as polyethylene oxide (polyox), to provide lubrication during shaving or hair removal when the water-soluble polymer enters the solution with water present during shaving or epilation. Since the application of polyox as a shaving or waxing lubricant, little development has been done in the field, although polyox has its limitations. For example, the use of low molecular weight polyox offers limited lubrication, and although better lubrication can be seen when using polyox with higher molecular weights, this impacts on other aspects of the aqueous solution typically formed in use, for example, the resulting viscosity in the aqueous solution can also increase, leading to negatively perceived attributes, for example, in relation to the sensation of shaving or waxing for the user, particularly with respect to the lubricant. Consequently, there is a need for technologies that break this paradigm to offer greater lubrication benefits, ideally without a negative impact on consumer perception.
    [0005] [0005] SUMMARY OF THE INVENTION
    [0006] [0006] One aspect of this invention relates to an auxiliary shaving or waxing element comprising a lubricating material, which comprises a water-soluble polymer that has an average molecular weight of at least 5,000 and a carbon oxide copolymer. polyethylene and polypropylene oxide. A further aspect of the invention relates to a razor or shaving cartridge comprising the aforementioned shaving or shaving aid element. Another aspect of the invention relates to a shaving or shaving device comprising the aforementioned shaving or shaving aid element. A further aspect of the invention relates to a method for manufacturing a shaving or hair removal aid comprising the polyethylene oxide copolymer and the polypropylene oxide.
    [0007] [0007] BRIEF DESCRIPTION OF THE DRAWINGS
    [0008] [0008] Figure 1 is a perspective view of a razor or shaving cartridge that includes a shaving or waxing aid of the present invention. Figure 2 is a cross-sectional view taken along line 2–2 of Figure 1. Figure 3 is a side elevation view of a second type of shaving or waxing aid of the present invention.
    [0009] [0009] DETAILED DESCRIPTION OF THE INVENTION
    [0010] [0010] I. Lubricating material
    [0011] [0011] The auxiliary shaving or epilation element (or auxiliary shaving or epilating skin contact) comprises a lubricant, or lubricating material, which comprises a water-soluble polymer typically intended to provide lubrication in use, and which has an average molecular weight of at least 5,000. The lubricating material can be in various forms, in addition to mixtures / combinations thereof, as will be described below.
    [0012] [0012] Examples of water-soluble polymers include polyethylene oxide, poly (vinylpyrrolidone), polyacrylamide, poly (hydroxymethacrylate), poly (vinylimidazoline), polyethylene glycol, polyvinyl alcohol, poly (hydroxyethimethacrylate), silicone polymers and a mixture thereof. In some embodiments, said water-soluble polymer is selected from the group consisting of polyethylene oxide, polyethylene glycol and mixtures thereof.
    [0013] [0013] The water-soluble polymer will preferably comprise at least about 50%, more preferably at least 60%, by weight, of the shaving or shaving aid element, up to about 99% (or up to about 90% of the lubricating material). For example, the water-soluble polymer can be present in an amount of at least about 50%, preferably from about 50% to about 99.9%, more preferably from about 60% to about 95% (for example, from about 90% to about 95%) and most preferably from about 70% to about 90%, by weight, of the lubricating material. Not all water-soluble polymer needs to satisfy the average molecular weight requirement, for example, a blend of two or more grades of polyethylene oxide could be used, with at least one, but less than all, grades satisfying the attribute. of average molecular weight, but the total amount of polyethylene oxide is within one of the above ranges. Alternatively, the average molecular weight for the entire water-soluble polymer (especially polyethylene oxide) may fall within the desired average molecular weight range, as well as the total amount of water-soluble polymer (especially polyethylene oxide) being in accordance with one or more of the above tracks.
    [0014] [0014] The most preferred water-soluble polymers are commonly known poly (ethylene oxides) such as POLYOX (available from Union Carbide Corporation) or ALKOX (available from Meisei Chemical Works, Kyoto, Japan). The water-soluble polymer (especially those poly (ethylene oxides)) will preferably have average molecular weights of at least about 20,000, at least about 50,000, at least about 100,000, or from about 100,000 to 6 million preferably around 300,000 to 5 million. A particularly preferred polyethylene oxide comprises a blend of about 40% to 80% polyethylene oxide that has an average molecular weight of about 5 million (for example, POLYOX COAGULANTE) and about 60% to 20% aluminum oxide. polyethylene that has an average molecular weight of about 300,000 (for example, POLYOX WSR-N-750). The polyethylene oxide blend can also advantageously contain up to about 10% (e.g., about 5%), by weight, of a low molecular weight polyethylene glycol (i.e., molecular weight ˂ 10,000), such as PEG-100 .
    [0015] [0015] II. Copolymer of polyethylene oxide and polypropylene oxide
    [0016] [0016] The shaving or hair removal auxiliary element further comprises a copolymer of polyethylene oxide (PEO) and polypropylene oxide (PPO) to improve the lubricating properties of the shaving or hair removal auxiliary element. The PEO / PPO copolymer can have any average molecular weight. Advantageously, the PEO / PPO copolymer has an average molecular weight of at least 5,000, preferably in the range of 10,000 to 20,000, more preferably of 11,000 to 15,000, most preferably of 12,000 to 13,000, and even more preferably of 12,250 to 12,750. Without the desire to be bound by theory, it is thought that the inclusion of a PEO / PPO copolymer of sufficient molecular weight further improves the lubrication properties of the water-soluble polymer in aqueous solution, especially for polyethylene oxide, and avoids , thus, an undesirable sensation in use.
    [0017] [0017] The PEO / PPO copolymer can be of any arrangement, but it is advantageously a block copolymer, for example, a copolymer in diblock, triblock, multiblock, radial block or random block. Preferably, the PEO / PPO copolymer is a triblock copolymer, more preferably a triblock copolymer having the following sequence: PEO-PPO-PEO. Such PEO and PPO triblock copolymers are commercially available under trade names such as Pluracare, available from BASF, and Pluronic, available from Sigma-Aldrich.
    [0018] [0018] The PEO / PPO copolymer can have a weight ratio of PEO to PPO (i.e., from ethylene oxide repeating units to propylene oxide repeating units), for example, from 1,000: 1 to 1: 1,000 or 100: 1 to 1: 100. Advantageously, the weight ratio is selected to improve the solubility properties of the PEO / PPO copolymer in a system comprising a water-soluble polymer (especially polyethylene oxide) and water and, therefore, can be 10: 1 to 1:10, preferably from 1: 1 to 1: 7 (or any reason in which the weight of the PPO is greater than or equal to the weight of the PEO), more preferably, from 1: 2 to 1: 5, with more preferably, from 1: 2.5 to 1: 4 and, more preferably, from 1: 2.5 to 1: 3.
    [0019] [0019] An alternative way of describing the solubility properties of the PEO / PPO copolymer is through the well-known hydrophilic-lipophilic balance (HLB). The PEO / PPO copolymer can have an HLB of 0 to 50, but, advantageously, it will have an HLB in the range of 1 to 30, preferably from 5 to 25, more preferably from 10 to 25, most preferably from 17 to 24, and more preferably 18 to 23.
    [0020] [0020] The PEO / PPO copolymer is typically present in an amount of 0.01% to 50%, by weight, of the lubricating material or, by weight, of the shaving or hair removal aid. Preferably, the PEO / PPO copolymer is present in an amount of 0.01% to 50%, preferably 2% to 40%, more preferably 3% to 25%, most preferably 4% to 20%, and even more preferably, from 5% to 10%, by weight, of the lubricating material or, by weight, of the shaving and shaving aid element, to offer an optimized balance between the water-soluble polymer that provides lubrication and the PEO / PPO copolymer to solve the problems associated with the water soluble polymer.
    [0021] [0021] III. Water insoluble polymer
    [0022] [0022] The shaving or hair removal aid may additionally comprise a water-insoluble polymer, for example, in which the water-soluble polymer is dispersed, which may be called a water-insoluble matrix. Preferably, the water-insoluble polymer is present in an amount of about 0% to about 50%, more preferably about 5% to about 40%, and most preferably, about 15% about 35%, by weight, of the shaving or shaving aid. Suitable water-insoluble polymers that can be used include polyethylene (PE), polypropylene, polystyrene (PS), butadiene-styrene copolymer (for example, medium and high impact polystyrene), polyacetal, acrylonitrile-butadiene-styrene copolymer, ethylene copolymer - vinyl acetate, polyurethane and blends of the same as polypropylene / polystyrene blend or impact polystyrene / polystyrene blend.
    [0023] [0023] A preferred water-insoluble polymer is polystyrene, preferably a polystyrene for general use, such as NOVA C2345A, or a high impact polystyrene (HIPS) (ie polystyrene-butadiene), such as BASF 495F KG21. The strip or any portion must contain a sufficient amount of water-insoluble polymer to provide adequate mechanical strength, both during production and use. In some embodiments, the shaving or shaving aid element comprises any other ingredients commonly found in commercially available shaving or waxing aid elements, such as those used in shaving and shaving cartridges available from Gillette, Schick or BIC. Non-limiting examples of such shaving or waxing auxiliary elements include those disclosed in US 6,301,785, 6,442,839, 6,298,558, 6,302,785, and in US patent publications 2008/060201 and 2009/0223057.
    [0024] [0024] IV. Additional optional ingredients
    [0025] [0025] The shaving or shaving aid element or lubricating material may contain any other conventional shaving or shaving aid elements, such as low molecular weight water-soluble release enhancing agents, such as polyethylene glycol (molecular weight ˂ 10,000, for example example, 1% to 10%, by weight, of PEG-100), water-swelling release enhancing agents, such as cross-linked polyacrylics (for example, 2% to 7%, by weight), dyes, active for skin treatment , surfactants, soaps (including interrupted soaps), antioxidants, preservatives, emollients, lipids, oils, waxes, fats, cooling agents (especially, non-volatile cooling agents), essential oils, beard softeners, astringents, medicinal agents, plasticizers , additional lubricants, depilatory / keratolytic materials, stickiness enhancers, skin softening agents, fragrances, compatibilizing agents, anti-aging agents i-inflammatory, antipruritic / contra-irritant materials, etc.
    [0026] [0026] Portions containing a dye can be designed to release the dye (for example, by leaching or abrasion) and then cause the strip to change color during shaving or epilation, preferably in response to use of the colored portion, to provide an indication to the user that the shaving or shaving aid element and / or the razor cartridge has reached the end of its useful life, or the end of its optimum performance. A portion may contain, for example, between about 0.1% and about 5.0% (preferably between about 0.5% and 3%) of dye, by weight.
    [0027] [0027] In some embodiments, the lubricating material further comprises about 0.5% to about 50%, preferably from about 1% to about 20%, of polycaprolactone (preferably a molecular weight of 30,000 to 60,000). See US 6,302,785.
    [0028] [0028] In some embodiments, the shaving or hair removal auxiliary element additionally comprises a shaving or hair removal auxiliary element ingredient, for example, selected from the group consisting of poly (vinylpyrrolidone), polyacrylamide, hydroxypropyl cellulose, polyvinyl imidazoline, polyethylene glycol, polyvinyl alcohol, poly (hydroxyethyl) methacrylate, silicone copolymers, sucrose stearate, vitamin E, panthenol, aloe, polyethylene glycol, silicone oil, poly (tetrafluoroethylene) or Teflon® powders (manufactured by DuPont), menthol, camphor, eugenol , eucalyptol, safrole and methyl salicylate; tackiness enhancers such as Hercules Regalrez 1094 and 1126, cyclodextrins, inclusion complexes of skin softening agents with cyclodextrins; antimicrobial / keratolytic materials such as Resorcinol; anti-inflammatory agents such as candelilla wax and glycyrrhetinic acid; astringents such as zinc sulfate; surfactants such as iconol materials; compatibilizing agents such as styrene-b-EO copolymers; mineral oil, polycaprolactone (PCL) and combinations thereof.
    [0029] [0029] V. Vehicle
    [0030] [0030] In some embodiments, the auxiliary shaving or hair removal element additionally comprises a vehicle in which the lubricating material and, if present, any water-insoluble matrix and other materials can be contained within and / or be present in the vehicle. The vehicle may be in the form of a tray on which the lubricating material and, if present, the water-insoluble matrix or other materials are applied, or the vehicle may form a retention structure, at least partially, containing the lubricating material and, if present, any matrix insoluble in water or other materials. In some embodiments, the vehicle forms a reservoir, for example, from which the shaving or waxing aid is dispensed to the skin with or without direct contact between the vehicle and the skin, and as the wraps disclosed in US Patent Nos. 6,298. 558 and 7,581,318. Specifically where the lubricating material comprises a fluid or solid intended to be dissolved during shaving or waxing, but generally applicable, the vehicle is preferably a wrap that has one or more dispensing holes to control the dispensing of one or more of the materials of the skin contact element. With reference to the composition of the shaving or shaving aid element, the weight percentages defined here are determined based on the other components of the shaving or shaving aid element disclosed here, but not the vehicle, unless otherwise specified.
    [0031] [0031] VI. Shaver or epilator cartridge
    [0032] [0032] According to some embodiments of the invention, a hair removal cartridge (for example, a razor or shaving cartridge or a shaving head or epilation head) is provided that comprises a housing, at least one hair removal element hair inside the carcass and at least one shaving or waxing aid according to the invention as described above.
    [0033] [0033] The hair removal cartridge comprises one or more elongated edges or hair removal elements (for example, blades) generally positioned between the first and the second ends, said one or more elongated edges comprising a tip which extends towards said first end. For example, US Patent No. 7,168,173 generally describes a Fusion® razor or shaver that is commercially available from the Gillette Company, and that includes a razor or shaving cartridge with multiple blades. In addition, the hair removal cartridge, or razor or shaving cartridge, can include a shield as well as an auxiliary element for shaving or waxing. A variety of razor or shaving cartridges can be used in accordance with the present invention. Some non-limiting examples of suitable shaving or shaving cartridges, with and without fins, protectors and / or shaving or hair removal aids, include those marketed by The Gillette Company in the Fusion® and Venus® product lines, as well as those presented in US patents No. 7,197,825, 6,449,849, 6,442,839, 6,301,785, 6,298,558 and 6,161,288, and in US patent publication No. 2008/060201. Those skilled in the art will understand that the present shaving or shaving aid element can be used with any disposable shaving or shaving system or apparatus currently available on the market, including those that have 2, 3, 4, 5 or more blades.
    [0034] [0034] The elongated edge is the structure responsible for cutting, pulling or shearing the hair on the skin. For example, the hair removal element can be one or more blades, a scraping edge that can be used after a depilatory is applied to the skin to be treated or a plurality of tweezers that can be used for epilation ( pull the hair out of the follicle).
    [0035] [0035] In some embodiments, said at least one auxiliary shaving or hair removal element is located in the portion of the cartridge that comes into contact with the skin during the shaving or hair removal process, ahead, between and / or behind the (s) hair removal element (s). A "forward" feature of one or more hair removal elements, for example, is positioned so that the surface to be treated by the shaving or waxing device encounters the feature before it encounters the hair removal elements. A feature "behind" a hair removal element is positioned so that the surface to be treated by the shaving or epilation device encounters the feature after it encounters the hair removal element. Where more than one shaving or shaving aid element is provided in the shaving or shaving device, they may be the same (identical) or different in terms of physical form / structure and / or chemical composition, and one or more of them may comprise the sensitizing substance.
    [0036] [0036] In some embodiments, the cartridge comprises a shield that comprises at least one flexible protrusion elongated to come into contact with the user's skin. The at least one flexible protuberance may comprise flexible fins generally parallel to said one or more elongated edges (hair removal elements). Said at least one flexible protrusion may additionally or alternatively comprise flexible fins that comprise at least a portion that is not generally parallel to said one or more elongated edges. Non-limiting examples of suitable shields include those used in current razors or shaving blades and include those presented in US Patent Nos. 7,607,230 and 7,024,776 (which feature flexible / elastomeric fin bars), 2008/0034590 (which features curved bulkhead fins), 2009 / 0049695A1 (which has an elastomeric bulkhead that has a bulkhead that forms at least one passageway that extends between an upper surface and a lower surface). In some embodiments, said auxiliary shaving or waxing element is positioned on the cartridge behind the shield and in front of the hair removal elements. In another modality, the shaving or waxing auxiliary element is positioned on the cartridge in front of the screen. This modality can be particularly useful for supplying the lubricating material before coming into contact with the bulkhead.
    [0037] [0037] VII. Hair removal device
    [0038] [0038] In accordance with some embodiments of the invention, a hair removal device (for example, a razor or shaving device) is provided which generally comprises a hair removal cartridge (for example, a hair removal cartridge). razor or epilator) according to the invention, as described above, and a handle (or handle portion) fixed to the cartridge permanently or removably. The hair removal device can be manual or electrically operated, and can be used for wet and / or dry application. The hair removal cartridge can be replaceable and / or pivotally connected to the cable (for example, through a connection structure with the cartridge) and, in turn, or independently (for example, permanently attached) to a cable. In some embodiments, the cartridge connection structure includes at least one arm for releasably engaging the hair removal cartridge.
    [0039] [0039] VIII. Manufacturing method
    [0040] [0040] Any of the auxiliary shaving or waxing elements of the present invention can be manufactured by any appropriate method, including injection molding, press, impregnation, spray coating, calendering and extrusion, the latter being preferred. All components of the strip can be mixed prior to molding or extrusion. For best results, it is preferable that the components are dry. In summary, the method comprises the steps of providing a feed stream comprising a water-soluble polymer that has an average molecular weight of at least 5,000 and a copolymer of polyethylene oxide and polypropylene oxide, preferably by heating the said feed flow at a temperature of 120 ° C to 200 ° C, and, molding, pressing, impregnating, spray coating, calendering and / or extruding said feed flow to form an auxiliary shaving or waxing element.
    [0041] [0041] For example, the blended components can be extruded through a 1.9 cm (3/4 inch) diameter Haake System 90 extruder with a cylinder pressure of about 7 to 14 MPa (1,000 to 2,000 psi ), a rotor speed of about 10 to 50 rpm, and a temperature of about 150 ° C to 185 ° C and a matrix temperature of about 170 ° C to 185 ° C. Alternatively, a 3.18 cm (1 1/4 inch) single screw extruder can be employed with a processing temperature of 175 ° C to 200 ° C, preferably 185 ° C to 190 ° C, a speed of thread of 20 to 50 rpm, preferably 25 to 35 rpm, and an extrusion pressure of 12 to 34 MPa (1,800 to 5,000 psi), preferably 14 to 24 MPa (2,000 to 3.00 psi). The extruded strip is air-cooled to about 25 ° C. To mold the strips by injection, it is preferable, first, to extrude the powder blend into pellets. This can be done in a 1 1/4 or 3.8 cm (1 ½ inch) single-screw extruder at a temperature of 120 ° C to 180 ° C, preferably 140 ° to 150 ° C, at a speed thread speed from 20 to 100 rpm, preferably 45 to 70 rpm. The pellets are then molded in a single-material or multi-material molding machine, which can be single-caved or multi-caved, optionally equipped with a hot runner system. The process temperature can be from 165 ° C to 250 ° C, preferably from 180 ° C to 225 ° C. The injection pressure must be sufficient to fill the part completely without vaporization. Depending on the cavity size, configuration and quantity, the injection pressure can be in the range of 2 to 17 MPa (300 to 2,500 psi). The cycle time depends on the same parameters and can be in the range of 3 to 30 seconds, with the optimum in general being about 6 to 15 seconds.
    [0042] [0042] IX. Details of the figures
    [0043] [0043] With respect to Figures 1 and 2, the razor or shaving cartridge 14 includes a housing 16, which has three blades 18, an elastomeric shield with fins 20, and an auxiliary shaving or waxing element 22 located in the portion on the skin (in this case, the cover) of the cartridge. The shaving or shaving aid element 22 is shown to have two layers, the first layer may be in accordance with the present invention and the second layer may be a conventional shaving or shaving aid, or vice versa. The shaving or shaving aid element is preferably locked (for example, by means of adhesive, a fitting, or melt glue) in an opening at the rear of the cartridge. The shaving or shaving aid element 32, shown in Figure 3, is similar to the shaving or shaving aid element 22, except that the shaving or shaving aid element 32 has an entirely homogeneous and uniform composition, slightly curved to the flat top surface . The auxiliary shaving or waxing elements according to the invention can also be manufactured in a wedge-shaped cross-section or any other desired shape. The shaving or waxing auxiliary element can also be constructed in two or more layers, such as a sandwich or a wrap / core construction.
    [0044] [0044] X. Hair removal methods (especially shaving or waxing)
    [0045] [0045] The hair removal cartridge (especially a razor or epilator cartridge) or hair removal device (especially a razor or epilator) of the present invention can be used to remove hair (especially by shaving or waxing) or in a hair removal method (especially by shaving or waxing), the method comprising the steps of providing a hair removal cartridge (especially a razor or shaving cartridge) or shaving device hair removal (especially a razor or shaver) according to the present invention in any form and passing it over the body surface. Additional optional steps may include moistening the surface, washing the surface, applying one of the several commonly known shaving or shaving preparations to the surface (the previous options typically occurring before passing the shaving / shaving or shaving cartridge or shaving device). hair removal / shaver or shaving on the surface), rinse the surface (which may occur before and / or after passing the hair removal cartridge / shaver or shaving or hair removal device / appliance shave or shave on the surface), dry the surface and apply one of the several commonly known post-shaving or shaving compositions to the skin (the last two steps typically occurring after passing the shaving / shaving or shaving cartridge or hair removal device / razor or shaving on the surface).
    [0046] [0046] XI. EXAMPLES
    [0047] [0047] The following examples can be manufactured according to the tables below with the following method: the ingredients are combined and mixed with other ingredients in a tipping mixer to produce a homogeneous powder. The obtained powder is then simply extruded into auxiliary shaving or waxing elements at 160 ° C to 180 ° C and 100 to 200 bar pressure.
    [0048] [0048] The friction coefficient of a common razor or shaving cartridge (consistent design between measurements) that brings each of the shaving or waxing auxiliary elements in the example (physically identical) above was measured against a skin simulation of polyurethane having dimensions of 7.5 cm (3 inches) by 17 cm (6.5 inches) on a Dia-stron MTT175 instrument fitted with a horizontal load cell of 2,000 g / cm2. The skin mimetic was heated to a temperature of 27 ° C, and a downward force of 300 g (equivalent to mass) was applied. The razor or shaving cartridge (including the shaving or shaving aid) was dipped in water at a temperature of 55 ° C and 1 ml of water (also heated to 55 ° C) was applied to the skin mimetic for moistening it before measurement. The UvWin software package supplied with the Dia-stron instrument (v. 1.24.0000) was used to perform three overlapping and subsequent passes of 100 mm in length with the razor cartridge or epilating at a speed of 1,500 mm / min., ensuring that the razor or shaving cartridge did not come into contact with the skin mimetic when it moved between strides. After the three passes, the skin mimetic was removed from the device to be washed with hot water, scrubbed to be cleaned by hand, dried with a paper towel and rinsed before being replaced in the device ready for the next sample. The friction coefficient was calculated for each pass based on the intermediate 70 mm length of the pass (ie, from 15 mm along the pass to 85 mm along the pass).
    [0049] [0049] This procedure was repeated to produce results for a total of 5 shaving or waxing auxiliary elements for each example. The results for each of the three passes (averages of the 5 auxiliary elements for shaving or waxing) appear in the graph below.
    [0050] [0050] The data show that the addition of copolymer of polyethylene oxide and polypropylene oxide reduces the friction coefficient produced by the tested examples.
    [0051] [0051] As used here, molecular weights (mol.weight) are provided in unified atomic mass units, daltons or g / mol.
    [0052] [0052] It should be understood that each maximum numerical limit mentioned in this specification includes each of the lower numerical limits, as if such lower numerical limits were expressly indicated in this document. Each minimum numerical limit mentioned in this specification includes each of the upper numerical limits, as if such upper numerical limits were expressly registered in this document. Each numerical range mentioned in this specification includes all the narrowest ranges that fall within that broadest numerical range, as if such narrower numerical ranges were expressly indicated in this document. Similarly, it should be understood that each resource of each specified modality of the invention can be applied independently to each other specified modality, as if all such combinations were expressly written in it, unless these combinations are specifically excluded or the relevant resources are naturally incompatible (for example, resources are directly contradictory).
    [0053] [0053] All parts, ratios and percentages in the present invention, in the specification, in the examples and in the claims, are expressed in weight of the shaving or waxing auxiliary element, and all numerical limits are used with the normal degree of accuracy allowed by the technique, except where otherwise indicated.
    [0054] [0054] The dimensions and values presented in the present invention should not be understood as being strictly limited to the exact numerical values mentioned. Instead, except where otherwise specified, each of these dimensions is intended to mean both the mentioned value and a range of functionally equivalent values around that value. For example, a dimension revealed as "40 mm" is intended to mean "about 40 mm".
    [0055] [0055] All documents cited in the DETAILED DESCRIPTION OF THE INVENTION are, in their relevant part, incorporated herein by reference and the quotation of any document should not be interpreted as admitting that it represents prior art with respect to the present invention. If any meaning or definition of a term in this written document conflicts with any meaning or definition in a document incorporated by reference, the meaning or definition assigned to the term in this written document will take precedence. Except where otherwise noted, the articles "o", "a", "one" and "one" mean "one or more".
    [0056] [0056] Although specific modalities of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is intended, therefore, to cover in the appended claims all such changes and modifications that fit the spirit and scope of the present invention.
    权利要求:
    Claims (12)
    [0001]
    Auxiliary shaving or waxing element (22) characterized by the fact that it comprises a lubricating material, the lubricating material comprising: The. a water-soluble polymer that has an average molecular weight of at least 5,000, and B. a copolymer of polyethylene oxide and polypropylene oxide, wherein said copolymer has an average molecular weight of 12,000 to 13,000.
    [0002]
    Shaving or hair removal auxiliary element according to claim 1, characterized in that the copolymer of polyethylene oxide and polypropylene oxide is a block copolymer.
    [0003]
    Shaving or waxing auxiliary element according to claim 1, characterized by the fact that the ratio between polyethylene oxide and polypropylene oxide in the copolymer of polyethylene oxide and polypropylene oxide is in the range of 10: 1 to 1:10 .
    [0004]
    Shaving or waxing auxiliary element according to claim 1, characterized by the fact that the copolymer of polyethylene oxide and polypropylene oxide is present in an amount of 0.01% to 50% by weight of the lubricating material.
    [0005]
    Shaving or hair removal auxiliary element according to claim 1, characterized by the fact that the water-soluble polymer is selected from polyethylene oxide, poly (vinylpyrrolidone), polyacrylamide, poly (hydroxymethacrylate), poly (vinylimidazoline), polyethylene glycol, polyvinyl alcohol, poly (hydroxyethimethacrylate), silicone polymers and mixtures thereof.
    [0006]
    Shaving or hair removal auxiliary element according to claim 1, characterized by the fact that the water-soluble polymer is polyethylene oxide.
    [0007]
    Shaving or hair removal auxiliary element according to claim 1, characterized by the fact that the water-soluble polymer has an average molecular weight of 300,000 to 5 million.
    [0008]
    Shaving or waxing auxiliary element according to claim 1, characterized by the fact that the water-soluble polymer is present in a content of 70% to 90%, by weight, of the lubricating material.
    [0009]
    Shaving or shaving auxiliary element according to claim 1, characterized in that the shaving or shaving auxiliary element additionally comprises a water-insoluble polymer, in which the lubricating material is preferably dispersed in the water-insoluble polymer.
    [0010]
    Shaving or hair removal auxiliary element according to claim 9, characterized by the fact that the water-insoluble polymer is selected from: polyethylene, polypropylene, polystyrene, high impact polystyrene, butadiene-styrene copolymer, polyacetal, acrylonitrile copolymer -butadiene styrene, ethylene-vinyl acetate copolymer and a mixture of them.
    [0011]
    Shaving or shaving aid element according to claim 9, characterized in that the water-insoluble polymer is present in a content of 15% to 35%, by weight, of the shaving or shaving aid element.
    [0012]
    Method for the manufacture of an auxiliary shaving or waxing element, characterized by understanding the steps of: The. provide a feed stream comprising: i. a water-soluble polymer that has an average molecular weight of at least 5,000; and ii. a copolymer of polyethylene oxide and polypropylene oxide, wherein said copolymer has an average molecular weight of 12,000 to 13,000, B. preferably, heating said feed stream to a temperature of 120 ° C to 200 ° C, and ç. shaping, pressing, impregnating, spray coating, calendering and / or extruding said feed stream to form an auxiliary shaving or shaving element.
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20140323374A1|2014-10-30|
    JP2016518196A|2016-06-23|
    WO2014176153A1|2014-10-30|
    US10125336B2|2018-11-13|
    BR112015026912A2|2017-07-25|
    EP2988831B8|2018-08-22|
    SG10201708742TA|2017-12-28|
    MX361107B|2018-11-27|
    MX2015014670A|2016-09-07|
    EP2988831B1|2018-07-04|
    JP2017104627A|2017-06-15|
    EP2988831A1|2016-03-02|
    RU2620338C1|2017-05-24|
    JP6353102B2|2018-07-04|
    RU2015144760A|2017-05-25|
    CN105163810A|2015-12-16|
    SG11201508510TA|2015-11-27|
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    法律状态:
    2018-02-27| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-04-28| B07A| Technical examination (opinion): publication of technical examination (opinion)|
    2020-08-25| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2021-01-12| B09A| Decision: intention to grant|
    2021-03-23| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 21/04/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201361815459P| true| 2013-04-24|2013-04-24|
    US61/815,459|2013-04-24|
    PCT/US2014/034770|WO2014176153A1|2013-04-24|2014-04-21|Lubricating shaving aid member|
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