• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention falls within the field of advanced composite materials in the field of development of bodies for transportation and for the development of new construction materials. The new material with improved heat-insulating capacity for transportation and construction, and the claimed manufacturing process come from the chemical polymerization reaction that comprises at least two reactive polymerization agents, and an additive that contains micronized diatomaceous earth; which can be added to one or both agents before the chemical reaction, and later confers improved physical properties (thermal conductivity, density, etc ...) to the resulting material. This new material can be applied in molds by injection techniques at high or low pressure, by casting, etc ... (Machine-translation by Google Translate, not legally binding)
    公开号:ES2801775A1
    申请号:ES201930608
    申请日:2019-07-01
    公开日:2021-01-13
    发明作者:Ortega Miguel Peragon；Cabezas Francisco De Borja Diaz；Iglesias Francisco Corpas
    申请人:Liderkit Sl；
    IPC主号:
    专利说明:

    [0002] NEW MATERIAL WITH IMPROVED THERMAL INSULATING CAPACITY FOR TRANSPORT AND CONSTRUCTION FROM CHEMICAL REACTION OF
    [0004] TECHNICAL SECTOR
    [0006] The present invention falls within the field of advanced composite materials in the field of development of bodies for transportation and for the development of new construction materials. Especially, this invention relates both to the resulting composite material that has additives in its formulation, such as diatomaceous earth, as well as the process for preparing the new material. This composite material obtained finds direct application in the field of construction, transport by land, air or sea, as well as in the environment in general, since this type of material has better heat-insulating properties and also takes advantage of waste materials from the agri-food industry.
    [0008] BACKGROUND OF THE INVENTION
    [0010] Diatomaceous earth. Current utilities.
    [0012] Diatomite or diatomaceous earth (also known as DE, TSS, dihydro kieselguhr, or kieselgur) is a siliceous sedimentary rock formed by diatom microfossils, which were unicellular marine algae that secrete a siliceous skeleton called frustule. This material serves as a filtration medium; its granulometry is ideal for water filtration and for brewing beer. Initially, this material was used to stabilize nitroglycerin, and form dynamite with it. Other apps existing with this material is its usefulness as an abrasive agent for polishing metals, it is used as an adjunct in cosmetics formulated in toothpaste and exfoliating skin creams. It also serves as a non-poisonous natural pesticide, especially in organic farming: the ingestion of silica particles causes lesions in the digestive tract that lead to death due to dehydration. Since diatomite is formed from the floating debris of diatoms, it is found near current or former surface waters. It is generally divided into two categories based on source of origin: freshwater and saltwater. Freshwater diatomaceous earth is collected from dry lake bed mines and is characteristically low in crystalline silica. Saltwater diatomaceous earth contains a high content of crystalline silica, making it a useful material for filters, due to the sieving characteristics of the crystals it possesses.
    [0014] Polyurethane. Current advantages in the isothermal vehicle transport sector.
    [0015] Polyurethane (PU, also called PUR) is a polymer that is obtained by condensation of hydroxyl bases, combined with diisocyanates (TDI or MDI is generally used). Polyurethanes are classified into two groups, defined by their chemical structure, differentiated by their behavior against temperature. In this way, they can be of two types: thermosetting polyurethanes or thermoplastic polyurethanes (depending on whether they degrade before flowing or if they flow before degrading, respectively). The most common thermoset polyurethanes are foams, widely used as thermal insulators and as resilient foams. Among the most common thermoplastic polyurethanes, those used in elastomers, high-performance sealant adhesives, shoe soles, paints, textile fibers, sealants, packaging, gaskets, preservatives, automobile components, in the construction, furniture and multiple industries stand out. more applications.
    [0016] Rigid polyurethane is the most efficient and durable thermal insulation material currently used in the transport sector. Its low thermal conductivity conferred by the closed cell structure and its cheap manufacturing technology have put it at the forefront of products that help to save energy through thermal insulation. The three main applications are: sprayed polyurethane, shaped polyurethane sheets and polyurethane sandwich panels. However, for the transport sector there are 3 factors that can cause polyurethane to have certain technical limitations:
    [0018] - The thickness of the polyurethane sheet.
    [0019] - The loss of heat through this material.
    [0020] - Densities of polyurethane.
    [0021] - The solutions in the joints between plate and plate.
    [0023] All this will influence the weight and the correct thermal insulation of the bodywork of isothermal vehicles, and that they may lose effectiveness when insulating from the outside, so they can be lighter. For this reason, the additivation of polyurethane in the transport sector is one of the tools used in the sector to improve the bodies of isothermal vehicles.
    [0025] Polyurethane. Recent patents on modification of physical properties.
    [0027] In the review of the state of the art of previous patents on polyurethane manufacturing methods, it is initially observed during the entire decade of the 80s and 90s of the last century that patents appear that confer different physical properties to the polyurethane through physical modifications in its elaboration, such as for example ES2295717T3 " Thermo- insulating and sound-absorbing construction element" was presented as a heat-insulating and sound-absorbing element by means of a hard polyurethane foam plate with a percentage of closed cells greater than 90%, whose surface It has from 1 to 18 holes per cm2 but in said patent the possibility of doping the polyurethane with another component or components was not observed so that said mixture would increase its insulating capacity. Patent ES2599602T3 "Method to manufacture fire-resistant foam insulating panels" describes how to provide the panels with fire-retardant capacity, by means of a metallic parameter on the same plates. It is not until well into the 21st century that patents begin to appear to chemically modify polyurethane formulations in order to provide it with different physicochemical properties than those it would have alone, especially to improve its fire-retardant properties to orient them to their application in construction. Several examples of the above are patent EP1621564A1 "Formulation of coating based on alkali silicate and polyisocyanate for use in sandwich panels" by means of a chemical reaction between an organic polyisocyanate, with an aqueous solution of alkali metal silicate and optionally a polyether polyol, suitable for use in sandwich panels in construction; patent WO2009143001A2 "Coating compositions comprising polyurea and graphite" that comprises the coating composition based on polyurea and / or polyurethane in addition to adding graphite to isocyanate and / or amine components that are the precursors of polyurethane, patent US20140087158A1 "Concrete panels with high performance and high energy efficiency precast insulation" where the invention comprises the design and manufacture of a multilayer panel that has a foam insulating panel on a first surface and a second surface based on cement, modified concrete polymer, plaster or mortar. Or finally the patent WO2013151410A1 "Magnetic polyurethane composition for nerve stimulation" which refers to a polyurethane composition with magnetic properties, which provides a constant magnetic field similar to that produced by the human body, the which allows to stimulate the nervous system, contribute to circulation blood and energy balance, to benefit health.
    [0028] REFERENCES USED
    [0029] The references that have been used in the drafting of this patent are the following:
    [0030] EP1621564A1 “Polyisocyanate and aqueous alkali silicate based coating formulation for use in sandwich panels” by Joern Kuester with priority date 07.26.2004
    [0032] WO2009143001A2 "Coating compositions comprising polyurea and graphite" by John M. Furar, Michael A. Zalich, Howard L. Senkfor, with priority date 05.19.2008
    [0034] US20140087158A1 "Precast insulated concrete panels of high performance and high energy efficiency"
    [0036] WO2013151410A1 "Magnetic polyurethane composition for nerve stimulation"
    [0037] EXPLANATION OF THE INVENTION
    [0039] This new material has a manufacturing process that includes at least the following steps or stages:
    [0040] a) Preparation of the molds. These molds will be cleaned of the presence of remains or dust with water, or organic solvents if necessary, and will be suitably dried to avoid the appearance of unwanted shapes in the resulting mold. If necessary, the application of release material would be added to ensure that the mixture does not stick to the mold.
    [0041] b) Weighing of the polymerization reagents separately in a dry environment at room temperature. Both the reagent comprising an isocyanate functional group (RN = C = O), as well as the reagent comprising an amine (R-NH-R), thiol (R-SH), or hydroxyl (R-OH) functional group or a combination of all these, so that they can react stoichiometrically (1: 1) with the reagent containing the isocyanate group. If necessary, terminating agents would be added to the polyols to ensure complete reaction of the reactants.
    [0042] c) Weighing the diatomaceous earth in a dry environment at room temperature. Diatomaceous earth can be added to both reagent 1 and reagent 2 for complete homogenization. It is very important that the diatomaceous earth is dehydrated before weighing, and that the weighing is carried out in a dry environment since the presence of moisture in some of the reagents can cause the subsequent polymerization reaction to not be carried out correctly.
    [0043] d) Intimate combination of reagents at temperature (10-35 ° C) and controlled stirring (1,000-10,000 rpm). An intimate combination of the reagents is intended so that the homogenization of the reagents is complete, and there can be no air bubbles in the mixture. The propeller of the stirrer when stirring should preferably be of the anchor type at the bottom of the mixing vessel.
    [0044] and)
    [0046] Advantages of the new material over existing materials.
    [0047] This new material, as can be seen in both Figure 1 and Figure 2, improves the existing thermal insulation capacities, by improving parameters such as thermal conductivity (decrease in this parameter) and density of the resulting material (it maintains the density almost identical to a 10% diatomaceous earth added to the mixture), which can cause that for the production of standard thermal insulation panels, the thermal insulation capacity of these panels can be increased without significantly increasing their weight, causing, for example, that for the manufacture of Isothermal bodies for transport vehicles, bodies of the same dimensions can be manufactured that have a similar weight, but maintain heat in a much more efficient way.
    [0048] BRIEF DESCRIPTION OF THE DRAWINGS
    [0050] FIGURE 1. Graph that describes the evolution of the thermal conductivity of the new thermal insulating material as the percentage of diatomaceous earth added to the mixture of the new material increases. Thermal conductivity (A) is expressed in International System units (W / K-m2), while the amount of diatomaceous earth added to the material is expressed in percentage by weight (%).
    [0052] FIGURE 2. Graph that describes the evolution of the density of the new thermal insulating material as the percentage of diatomaceous earth added to the mixture of the new material increases. The density (p) is expressed in 106 Kg / m3, while the amount of diatomaceous earth added to the material is expressed in percentage by weight (%).
    [0054] FIGURE 3 Flow chart that describes the minimum steps to be taken in order to obtain the new material with improved thermal insulation capacity
    [0055] PREFERRED EMBODIMENT OF THE INVENTION
    [0056] The application of this type of materials at an industrial level is framed in multiple industrial sectors:
    [0058] Transport industry. One of the most important challenges facing the transport industry in the 21st century is the development of materials that are much lighter, can retain certain functional characteristics (save heat, be flexible to impacts, etc ...) and which maintain costs of affordable manufacturing. With the use of this new material in bodywork in isothermal vehicles, it is possible to reduce the weight of the designed bodywork, reducing the carbon footprint of the vehicle, while at the same time improving the heat capacities of the material used. These applications are not only limited to the field of isothermal vehicles, but can also be applied to the automobile industry in general for certain parts that are used to maintain a space with a homogeneous temperature, such as the passenger compartment in different types of vehicles. vehicles (airplanes, cars, trains, etc.).
    [0059] Construction Industry. In the construction of sustainable buildings, architects increasingly take into account among their parameters the possibility of having the least impact on the environment, as well as the use of lighter materials that allow building more easily. With the use of this new material, it is possible to maintain the most stable temperature conditions within the building from the outside environment much more easily, avoiding the use of an excess of insulating material, reducing costs in the building and insulation from the outside by the builder .
    [0060] Once the nature of the invention has been sufficiently described, as well as an example of a preferred embodiment, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential characteristics of the invention claimed below.
    [0062] In the present invention use is made of certain specific vocabulary that experts in the art will be able to identify and determine, however, it is desired to be able to define exactly the scope of this vocabulary in this document in order to be able to determine exactly the concept, spirit and scope of the invention.
    [0063] The term "mold" (see Figure 3) is used in this document and is understood as any device that is used to shape the polyurethane before the curing process. The mold has a counter-mold provided with the holes necessary for the introduction of product. and the air outlet.
    [0065] The term "new material" used in this document is a polyurethane or polyurea resulting from the claimed compositions, which is formed from a reaction mixture that comprises a reagent that possesses at least one isocyanate functional group and a reagent that possesses at least one amine, hydroxyl, or thiol functional group.
    [0067] The term "reagent containing isocyanate groups" as used herein is understood as any chemical substance, monomer or thermosetting prepolymer, which may contain isocyanate as a functional group, includes unblocked compounds capable of forming a covalent bond with a group. reagent such as a hydroxyl, mercaptan or amine functional group, giving rise to a new material that has increasing its physical properties of hardness, traction, and heat insulating capacity. Therefore, isocyanate can refer to "free isocyanate", which In non-limiting alternative embodiments, the isocyanate of the present invention may be monofunctional containing one isocyanate functional group (NCO) or the isocyanate used in the present invention may be polyfunctional containing two or more isocyanate functional groups ( NCO) Isocyanates suitable for use in the present invention are numerous and can vary widely. Non-limiting examples of suitable isocyanates can include monomeric and / or polymeric isocyanates. The polyisocyanates can be selected from monomers, prepolymers, oligomers, or mixtures of these. In one embodiment, the polyisocyanate can be linear, branched, cyclic, aromatic C 2 -C 2 O, or mixtures of these. The term "reagent containing amine (R-NH-R), thiol (R-SH), or hydroxyl (R-OH) functional groups," used herein is understood as any chemical substance that contains these functional groups. and that it can undergo a chemical crosslinking reaction, giving rise to a new material that has increasing its physical properties of hardness, traction, and heat-insulating capacity.
    [0068] Suitable amines for use in the amine reagent of the present invention can be selected from a wide variety of known amines, such as primary and secondary amines, and mixtures of these that include polyamines having at least two functional groups, such as di -, polyamines with triple or higher functionality and mixtures of these. The amine or amines used can be aromatic or aliphatic, such as cycloaliphatic, or a mixture of these. Suitable monoamines include, but are not limited to, primary amines of the formula R 8 -NH 2 , where R8 is a hydrocarbon radical which may represent a straight or branched chain alkyl group, an arylalkyl group, a hydroxyalkyl group or an alkoxyalkyl group.
    [0069] Suitable thiols for use in the reagent of the present invention can be selected from a wide variety of known thiols. Used herein is a compound having a thiol or mercaptan group, ie, an "SH" group, and may be a "polythiol" with more than one SH group, such as a higher functional dithiol or thiol. Such groups are typically terminal and / or pendant so that they have active hydrogen that is reactive with other functional groups.
    [0070] The term "granulometry" that is used in this document is understood as the graduation that is carried out of the materials, indicating in units of length the size maximum that an aggregate particle of the measured material can have.
    [0071] The term "accelerator" used in this document is understood as any chemical that manages to accelerate the rate of a chemical reaction and that its mass decreases during the chemical reaction.
    [0072] The term "curing process" (see Figure 3) used herein is understood as any subsequent polymerization process that occurs, resulting in a chemical crosslinking reaction of the polyurethane.
    [0073] The new material, and / or the methods claimed herein can be made and executed without due experimentation in light of the present disclosure. It is evident that those skilled in the art can apply variations in the sequence of steps of the method described in the section on particular embodiments and in Figure 3 of this document, without departing from the concept, spirit and scope of the invention. All such similar modifications to those skilled in the art are considered within the spirit, scope and concept of the invention as defined by the appended claims.
    [0074] maximum that an aggregate particle of the measured material can have.
    [0075] The term "accelerator" used in this document is understood as any chemical that manages to accelerate the rate of a chemical reaction and that its mass decreases during the chemical reaction.
    [0076] The term "curing process" (see Figure 3) used herein is understood as any subsequent polymerization process that occurs, resulting in a chemical crosslinking reaction of the polyurethane.
    [0077] The new material, and / or the methods claimed herein can be made and executed without due experimentation in light of the present disclosure. It is evident that those skilled in the art can apply variations in the sequence of steps of the method described in the section on particular embodiments and in Figure 3 of this document, without departing from the concept, spirit and scope of the invention. All such similar modifications to those skilled in the art are considered within the spirit, scope and concept of the invention as defined by the appended claims.
    权利要求:
    Claims (10)
    [1]
    1. The new material with improved heat-insulating capacity for transport and construction from chemical polymerization reaction that comprises for its formation of at least:
    a) a first reagent (between 30-70% by weight) that contains among its functional groups an isocyanate group (R-N = C = O), where R can be any possible functional group.
    b) a second reagent (between 30-70% by weight) that can contain among its functional groups an amine group (R-NH-R), thiol group (R-SH), or hydroxyl (R-OH), or combinations of these, where R can be any possible functional group. c) an additive containing micronized diatomaceous earth (with an average granulometry between 1 and 80 microns) that makes the new material contain a diatomaceous earth richness between 1% and 30%.
    [2]
    2. . The new material with improved heat-insulating capacity for transport and construction from the chemical polymerization reaction of claim 1, is characterized in that the chemical relationship is stoichiometrically equivalent, between the reagent containing the isocyanate groups and the equivalents of the reagent containing the amine groups , thiol or hydroxyl added, must have a ratio equal to 1.
    [3]
    3. The new material with improved heat-insulating capacity for transport and construction from the chemical polymerization reaction of claim 1, is characterized in that the composition of the additive containing diatomaceous earth, and these diatomaceous earths are from the tripolite varieties (variety found in Tripoli, Libya), Bann-clay (variety found in the Lower Bann valley in Northern Ireland), and Mo-clay (variety found in northwest Denmark, especially on the islands of Fur and Mors), or combinations thereof.
    [4]
    4. The new heat-insulating material for transport and construction from the chemical polymerization reaction of claim 1, is characterized in that as the first reagent it can be a prepolymer that possesses functionality similar to an isocyanate.
    [5]
    5. The new material with improved heat-insulating capacity for transport and construction from the chemical polymerization reaction of claim 1, is characterized in that as the second reagent it can be a mixture of one or more polyols, polythiols and polyamines.
    [6]
    6. The new material with improved heat-insulating capacity for transport and construction from the chemical polymerization reaction of claim 1, is characterized in that as a second reagent there may be some catalyst in the mixture that accelerates the chemical polymerization reaction.
    [7]
    7. The new material with improved heat-insulating capacity for transport and construction from the chemical polymerization reaction of claim 1, is characterized in that the chemical polymerization reaction has a stoichiometric ratio of 1: 1 of equivalents of isocyanate groups (RNC = O) of the first reagent, versus the sum of equivalents of the second reagent containing at least hydroxyl groups (R-OH) and / or thiol groups (R-SH) and / or amine groups (R-NH-R) or combinations of all of them .
    [8]
    8. The new material with improved heat-insulating capacity for transport and construction from the chemical polymerization reaction of claim 1, is characterized in that an additional fire-retardant material can also be added, added to the first reagent, the second reagent, or both.
    [9]
    9. The new material with improved heat-insulating capacity for transport and construction from the polymerization chemical reaction of claim 1, is characterized in the order of addition of the additive containing diatomaceous earth can be added to the first reagent, or to the second reagent or both, before the reaction chemistry.
    [10]
    10. The new material with improved heat-insulating capacity for transport and construction from the chemical polymerization reaction of claim 1, is characterized by a manufacturing process that comprises at least the following steps or stages:
    f) Weighing of the raw materials indicated in claim 1 separately in a dry environment at room temperature.
    g) Intimate combination of the constituent elements indicated in claim 1, leaving in the last order of addition the addition of the second reagent (containing the hydroxyl, thiol or amine groups).
    h) The perfect homogenization of the elements that are combined by physical agitation at a constant temperature.
    i) Process of applied in molds and subsequent curing of said composition. For this, the molding will be carried out by high or low pressure casting or by injection of the resulting mixture into the mold, which must be previously prepared.
    类似技术:
    公开号 | 公开日 | 专利标题
    ES2366628T3|2013-06-24|Procedure to prepare a flexible polyurethane foam
    CN101805588B|2013-09-11|Polyurethane road caulking sealant with good durability and production process
    CN102604368B|2013-09-11|NCO replaced crosslinking cured joint filling material for concrete pavement
    JP2006328401A5|2009-07-02|
    IE40272L|1975-05-30|Inorganic-organic plastics
    ES2264435T3|2007-01-01|USEFUL POLYURETHANE COMPOSITIONS AS SHOCK SHOCK ABSORBERS AND A PROCEDURE FOR THEIR PREPARATION.
    CN103467694A|2013-12-25|Polyurethane board and preparation method thereof
    JP2010532799A|2010-10-14|Process for the production of polyurethane foams based on specific alkoxysilane functional polymers
    CN104591676A|2015-05-06|Chemical grouting material for coal face reinforcement
    CN105647459A|2016-06-08|Reaction-bonding-type two-component self-leveling polyurethane seal gum and preparing method thereof
    CN102504522A|2012-06-20|Polyurethane elastomer composition for producing polishing wheel
    ES2801775B2|2021-07-06|NEW MATERIAL WITH IMPROVED THERMAL INSULATING CAPACITY FOR TRANSPORT AND CONSTRUCTION FROM CHEMICAL REACTION OF 5 POLYMERIZATION
    CN105176479A|2015-12-23|High-strength silicone rubber and preparation method therefor
    EP2726527A1|2014-05-07|Silicone backbone prepolymers for flame resistant polyurethanes
    CN108611041A|2018-10-02|A kind of polyurethane caulking glue and preparation method thereof applied to high speed railway fragments-free railway
    KR20100018122A|2010-02-17|Environment-friendly ecological porous concrete composition for sustainable
    ES2842893T3|2021-07-15|Solid and foamed organomineral material
    ES2628884T3|2017-08-04|Compositions containing cyclic amine compounds, and polyurethane foams made with them
    KR101144140B1|2012-05-24|Environmental-friendly elastic paving material and method of preparing the paving material
    ES2292102T3|2008-03-01|INTEGRAL POLYURETHANE FOAM RESISTANT.
    CN110527482A|2019-12-03|Railway ballastless track special dual-component filleting waterproof gasket cement and preparation method thereof
    CN102140158B|2012-12-26|Polyurethane material based on carbon dioxide copolymer polyalcohol and application thereof
    ES2444427T3|2014-02-25|Procedure for coating, bonding and bonding mineral surfaces
    BR112012010513B1|2021-06-01|METHOD FOR PROVIDING A LIQUID ISOCYANATE COMPOSITION, LIQUID ISOCYANATE COMPOSITION AND USE OF THE SAME
    JP4540269B2|2010-09-08|Tiling adhesive and bonding method using the same
    同族专利:
    公开号 | 公开日
    ES2801775B2|2021-07-06|
    WO2021001582A1|2021-01-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB777894A|1954-09-01|1957-06-26|Us Rubber Co|An improved method of preparing a composition comprising a synthetic resin and a natural or synthetic rubber|
    DE2658121A1|1976-12-22|1978-06-29|Franz Bovender Abis Kg|Single stage prodn. of polycondensation resin moulding materials - e.g. based on polyester, polyamide or aminoplast, by mixing the condensants with a water binding agent for direct use|
    US4169826A|1978-06-12|1979-10-02|Gulf Oil Corporation|Processes for dispersing inorganic additives in thermoplastic polymers|
    DE10310907B3|2003-03-13|2004-01-08|Bayer Ag|Sound- and heat-insulating construction element|
    EP1621564A1|2004-07-26|2006-02-01|Huntsman International Llc|Polyisocyanate and aqueous alkali silicate based coating formulation for use in sandwich panels|
    US20110313084A1|2006-07-27|2011-12-22|Ppg Industries Ohio, Inc.|Coating compositions comprising polyurea and graphite|
    MX358002B|2012-04-03|2018-07-20|Eugenia Mena Navarro Maria|Magnetic polyurethane composition for nerve stimulation.|
    ITMI20121330A1|2012-07-31|2014-02-01|Dow Global Technologies Llc|METHOD FOR THE PREPARATION OF INSULATING PANELS EXPANDED IN FLAME RESISTANT|
    US8877329B2|2012-09-25|2014-11-04|Romeo Ilarian Ciuperca|High performance, highly energy efficient precast composite insulated concrete panels|
    法律状态:
    2021-01-13| BA2A| Patent application published|Ref document number: 2801775 Country of ref document: ES Kind code of ref document: A1 Effective date: 20210113 |
    2021-07-06| FG2A| Definitive protection|Ref document number: 2801775 Country of ref document: ES Kind code of ref document: B2 Effective date: 20210706 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201930608A|ES2801775B2|2019-07-01|2019-07-01|NEW MATERIAL WITH IMPROVED THERMAL INSULATING CAPACITY FOR TRANSPORT AND CONSTRUCTION FROM CHEMICAL REACTION OF 5 POLYMERIZATION|ES201930608A| ES2801775B2|2019-07-01|2019-07-01|NEW MATERIAL WITH IMPROVED THERMAL INSULATING CAPACITY FOR TRANSPORT AND CONSTRUCTION FROM CHEMICAL REACTION OF 5 POLYMERIZATION|
    PCT/ES2020/070312| WO2021001582A1|2019-07-01|2020-05-14|New material with improved thermoinsulating capacity, for transport and construction, produced from a chemical polymerisation reaction|
    [返回顶部]