Method for elastic foam |
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IPC classes for russian patent Method for elastic foam (RU 2130466):
The method of producing foam / 2128675
The invention relates to orthopedics, in particular to the creation of the material used to make impressions of the foot and making the impression of a plaster positive in the manufacture of individual insoles and shoes
 A method of obtaining a flexible polyurethane foam for the manufacture of upholstered furniture elements / 2128193
The invention relates to polyurethane chemistry and relates to a method of obtaining a flexible molded polyurethane foam used in furniture industry
 The method of obtaining filled with polyurethane foam for insulation products / 2123013
The invention relates to the production of polyurethane foams with reduced Flammability and can be used for the manufacture of insulation products
A method of obtaining a semi-rigid polyurethane foam / 2110530
The invention relates to the chemistry of the production of cellular plastics, namely the production is filled with polyurethane foam, which can be used, for example, to remove paraffin and rubbing ski lubricants, as a cleaning tool in everyday life
 A method of obtaining a molded urethane elastomers / 2107073
The invention relates to methods for molding urethane elastomers with high strength properties and may find application in engineering, for example, for the manufacture of coating rolls of paper machines, rollers assemblies of sheet metal and other bulky items
 Method of producing elastic polyurethane foam cold forming and activating the mixture for its implementation / 2103279
The invention relates to the field of technology for elastic monopolarity in the presence of a catalyst, and may find application in the manufacture of gaskets furniture and upholstered car seats
 The way to obtain in closed form elastic polyurethane foam product and elastic polyurethane foam products / 2100383
The invention relates to the chemistry of polyurethanes and concerns a method for obtaining the closed form elastic polyurethane foam products used in the furniture industry, vehicles and so on
Mixture for obtaining flexible polyurethane foam / 2326132
Invention pertains to the mixture for obtaining flexible polyurethane foam and can be used as mastic for hydro and thermal insulation of foundations, buildings, pipelines, as well as for filling cavities in building structures. The mixture contains defined ratios of the following components: a hydroxyl containing oligomer-copolymer of butadiene and piperylene with molecular mass of 2100 and containing 0.92% hydroxyl groups; isocyanate component - polymethylene polyphenyl isocyanate with 29-31% content of isocyanate groups; catalysts: dibutyl tin dilaurate and N,N,N- triethylamine; water; glycerine; polydimethyl siloxane and polydimethyl siloxane modified by a polyester in the form of foam stabilisers and extra bitumen. Use of bitumen considerably lowers moisture absorption of the material and increases viscosity of the foam systems. This also enables the material to retain the density attained during foaming. Use of defined foam stabilisers in the mixture enables formation of more fine cells, with high stability and attainment of low density of the polyurethane foam.
 Polyurethane foam made of hydroxymethyl-containing polyesterpolyols / 2352593
Invention refers to method for making bulk, high resilience slabstock or moulded foam, used for upholstery, automobile seats and panel cushions, for packing, other applications to softening and energy management, for sealing and other applications. The presented method involves as follows. Organic polyisocyanate contacts with polyol compound containing high mass equivalent polyol or mixed polyols with foaming agent, gelling catalyst and surface-active substance added. At least 10 wt % of high mass equivalent polyol (polyols) represent one or more equivalent mass hydoxymethyl-containing polyesterpolyols at least 400 up to 15000 produced by interaction of hydoxymethyl group containing fatty acid with 12-26 carbon or this acid ester atoms and compound initiator polyol or polyamine, thereby polyesterpolyol contains as follows: [H-X](n-p)-R-[X-Z]p, where R is residual compound initiator, X is independent, -O-, -NH- or -NR'-, while Z- represents linear or branched chain containing one or more groups A, independently chosen of groups A1, A2, A3, A4 and A5, expressed by formulas (II), (III), (IV), (V) and (VI), respectively. Besides there is disclosed polyurethane foam made by the declared method. Declared method ensures making polyurethane foams with using polyol from renewable source.
Method of obtaining compounded foam polyurethane / 2355713
Invention concerns method of obtaining compounded foam polyurethanes for operation as shock, heat and sound absorbing layers. Compounded foam polyurethanes are obtained by interaction of 100 weight parts of polyol component and 20 weight parts of polyisocyanate component, where polyol component is mixed preliminarily with 70-100 weight parts of rubber chips, and reaction mix is foamed and solidified at 160°C or higher to component destruction temperature. Butadiene and piperylene copolymer with 1200-3200 molecular weight and 0.8-1.1% content of hydroxylic groups is used as polyol component, and polymethylenepolyphenylisocyanate with 29-31% content of isocyanate groups is used as polyisocyanate component.
Method for production of polyurethane foam / 2356915
Invention is related to method for production of polyurethane foam with application of secondary waste of polyethylene terephtalate, and may be used for production of hard polyurethane foams. Polyurethane foam is produced by interaction of polyisocyanate with polyol component containing secondary waste of polyethylene terephtalate dissolved in triethanolamine or in mixture of mono-, di-, trichloracetic acids, in amount of not more than 67 wt % from total weight of polyol component. At that interaction is carried out at the ratio of polyol component : polyisocyanate as 1:1 - 1:2. Prepared polyurethane foams have good consumer properties, such as compression strength, oil-, heat resistance and reduced inflammability.
 Flexible polyurethane foam / 2376321
Polyurethane foam is obtained by mixing a pre-polymer with foaming ingredients, containing at least one multifunctional isocyanate and water, which react releasing carbon dioxide. The pre-polymer, which has terminal hydroxyl groups, is obtained by reacting at least one polyol with less than a theoretical amount of at least one multifunctional isocyanate. The pre-polymer which is stable during storage can be obtained with low or high viscosity by choosing the corresponding amount isocyanate, which reacts with polyol. Use of more viscous pre-polymer enables regulation and setting the size of cells of the obtained foam.
Method of producing rigid polyurethane foam / 2385330
Method involves reacting a composition based on organic polyisocyanates with a composition which reacts with isocyanates in the presence of a hydrocarbon as a foaming agent. The said composition which reacts with isocyanates contains a maximum of 20 wt % polyester-polyols obtained from secondary streams, wastes or residue from production of DMT and/or PET, between 30 wt % and 50 wt % polyether-polyol obtained by reacting propylene oxide with an aromatic amine as an initiator, and between 30 wt % and 50 wt % polyether-polyol which is not initiated by an aromatic amine, where amount is based on total amount of the compound which reacts with isocyanates. Rigid polyurethane foam or polyisocyanurate foam modified with urethane corresponding to this proposed invention has low lambda value especially at 10°C.
Fluoro-hydrocarbon compositions / 2395539
Present invention relates to compositions for foaming foam plastic used in insulation materials at low temperatures. The said composition ontains 1,1,1,3,3-pentafluorobutane (HFC - 365mfc) and 1,1,1,3,3-pentafluoropropane (HFC-245fa) with mass ratio HFC-365mfc/HFC-245fa between 65:35 and 73:27.The invention also relates to a premix for producing foamed polyurethane or modified foamed polyurethane which contains such a foaming composition, at least one polyol and a catalyst for reaction of isocyanates and polyols. The invention also describes a method of producing foamed polyurethane or modified foamed polyurethane using the disclosed foaming composition, as well as heat insulation material which contains foamed polyurethane or modified foamed polyurethane made using the said method. When prepared systems are used completely, the foaming composition does not have an ignition point, which provides safe production of (modified) foamed polyurethane.
 Polyurethane system and method of making foamed low density shoe articles with solid coating / 2397996
Present invention relates to a liquid polyurethane reactive system for producing shoe articles with a solid coating, e.g. sole inserts, soles etc. This reactive system includes at least one polyol meant for reaction with at least one isocyanate prepolymer, an expansion agent, an additive which contains a catalyst and expanded microspheres. The polyol is selected from polyester polyols with molecular weight from 1500 to 3000. Amount of expanded microspheres ranges from 1.0 to 30 % of the weight of polyol and the additive. Amount of the expansion agent ranges from 0.5 to 3.5% of the weight of polyol and additive. The invention also relates to a method of producing foamed shoe articles with a solid coating using the said liquid polyurethane system, resulting in a foamed structure with spontaneous foam density between 0.05 and 0.22 g/ml, as well as to foamed polyurethane shoe components made using the said method, and to use of expanded microspheres in the said liquid reactive polyurethane system.
 Foamed polyurethane / 2411254
Invention relates to polyurethane used, for example, as seat cushions, decorative elements for the inside of cars etc, and to methods of producing said polyurethane via radical-initiated cross-linking in the presence of at least one agent which produces radicals and under the effect of ionising radiation, respectively. According to the given method, at least one polyfunctional isocyanate, at least one polyol which is completely or mainly polyether polyol with molecular weight higher than 1500, and foaming ingredients are subjected to addition polymerisation and a foaming reaction in the presence of at least one component with a reactive double bond to obtain a foamed mass with a polyurethane matrix. The polyfunctional isocyanate is not 4,4'-diisocyanate diphenylmethane or does not contain 4,4'-diisocyanate diphenylmethane, and the foamed mass undergoes radical-initiated cross-linking with the component with the reactive double bond which is an acrylate or methacrylate polymer containing at least two hydroxyl groups which also react with the said isocyanate so as to be embedded into the polyurethane matrix.
 Polymeric polyols and polymer dispersions obtained from hydroxyl-containing materials based on vegetable oil / 2412954
Invention relates to polymeric polyols obtained from hydroxyl-containing materials, as well as dispersions of polymer particles in the said material. The polyol has a continuous polyol phase and dispersion ethylene-unsaturated polymer particles grafted on at least one stabiliser. The polyol phase contains at least one hydroxymethyl-containing polyester polyol derived from a fatty acid or a fatty acid ester. The polyol is a product of reaction between 9(10)-hydroxymethyl stearate or its alkyl ester and polyether polyol, containing ethylene oxide or propylene oxide links. The dispersion particles are a vinylaromatic polymer, nitirle with ethylene unsaturation or a mixture of two or more of them. The stabiliser is an addition compound of polyether polyol and vinylmethoxy silane or isocyanate with ethylene unsaturation.
 Method of producing fluorine-containing prepolymer having isocyanate groups / 2479595
Invention relates to a method of producing a fluorine-containing prepolymer having isocyanate groups of general formula:
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(57) Abstract: The invention relates to a method for producing elastic foam cellular structure, which can be used in the automotive industry, housing construction and other industries, including the production of sports destination. The invention consists in the fact that Polyoxypropylenediamine content PSO-groups from 2.0 to 4.0 wt. % foamed in the presence of latex with a dry matter content of not less than 20 wt.% when the mass ratio of 80-20:20-80. The specified latex acts as a catalyst, emulsifier, foaming agent and polymer matrix. Obtained in this method, the foam has a high elasticity, tensile strength, resistance to long-term compression and cyclic compression. table 1. The invention relates to a method for producing flexible foams of cellular structure that can be used in the automotive, housing, household and other industries, including the production of sports destination. A known method of producing foam by foaming isocyanates canadapurchase product, a mixture of a polyhydric alcohol with a molecular mass of 2800-5600 and toluylene diisocyanate, as the catalyst used octoate tin and dimethylethanolamine or octoate tin, bis-(2-dimethylaminoethyl)-ether, triethylenediamine, or octoate zinc and dimethylethanolamine, or N,N-dimethylcyclohexylamine and N-ethylmorpholine, as emulsifier - silicone emulsifier, and as a blowing agent is water (see SU patent N 668615, IPC 08 J 9/02, 1976). The disadvantages of the method are the complexity of the receipt of the foam through the use of a large number of components and the need for their accurate dosing, and the foam has poor physical and mechanical properties: elasticity, the nominal tensile strength, resistance to long-term and cyclic compression, which limits the range of its use. The closest in technical essence and the achieved effect is a method of producing elastic foam by foaming isocyanatobenzene product in the presence of a catalyst, emulsifier and foaming agent, as isocyanatobenzene product, a mixture of a polyhydric alcohol with a diisocyanate, as catalyst, a mixture of 2,2,2-diazabicyclo and dimethylaminomethylphenol with ATA and advanced socialization - octoate tin, as an emulsifier - block copolymers of polyorganosiloxane and polyoxyalkylene, and as a blowing agent use water (see EN 1275018, IPC C 08 G 18/14, 1985). The disadvantages of the method are the complexity of the receipt of the foam through the use of a large number of components and the need for accurate dosing, and the foam has poor elasticity, the nominal tensile strength, resistance to long-term and cyclic compression, which limits the range of its use. The objective of the invention is to provide a less cumbersome method of obtaining a foam having a higher physical and mechanical properties: elasticity, the nominal tensile strength, resistance to long-term and cyclic compression. The technical problem is solved by a method for elastic foam by foaming isocyanatobenzene product in the presence of a catalyst, emulsifier, foaming agent, which as isocyanatobenzene product use Polyoxypropylenediamine with a content of NCO-groups from 2.0 to 4.0 wt. %, and as a catalyst, emulsifier, foaming is when the mass ratio of latex to Polyoxypropylenediamine (20-80) : (80-20), it allows to increase the elasticity of the foam 3.5-14.5 times, conditional tensile strength 2.5 times, resistance to long-term compression 1.3-2.4 times, resistance to cyclic compression 1.3-2.1 times while reducing labor costs for obtaining foam through the use of fewer components. Polyoxypropylenediamine (urethane prepolymer - see addition to the technical Regulation TR 104.43-89 NGO "Kazan synthetic rubber plant them. S. M. Kirov) is a product of the interaction polyoxypropyleneglycol (simple oligoether - Laprol - see the all-Union scientific research Institute of synthetic resins. Department of the research Institute of feasibility studies, Cherkasy. Simple and complex oligoesters. The catalogue. Cherkasy-1981) and the organic isocyanate (di - or polyisocyanate ľ see B. A., Tombrou. Polyurethanes. TRANS. from English. State scientific and technical publishing house of the chemical literature. Moscow, 1961.- S. 13-18). In the method of producing elastic foam can be used both natural and synthetic and artificial latexes with a dry matter content of not less than 20 wt.%. Natural, synthetic is either directly from the milky juice of plants (natural latex), or by the polymerization (copolymerization) of unsaturated hydrocarbons (synthetic latex), or by dispersion of the polymers in the aqueous phase (artificial latexes). Example 1 (the prototype). Pre-cook the promoters I and II. Activator I: mixed catalyst 2,2,2-diazobicyclo (0,132 wt.h. ) and 2-N,N-dimethylaminomethylphenol (0,093 wt.h.) with a blowing agent is water (2.8 wt. o'clock) and the emulsifier is a block copolymer of polyorganosiloxane and polyoxyalkylene (1.1 wt. o'clock) and intensively stirred. Activator II: mixed polyhydric alcohol Laprol 3003 (3.8 wt.h.) and socialization - octoate tin (0.2 wt. hours). Then the container is placed polyhydric alcohol - Laprol 3003 (96,2 wt. h) add the activator I and II, the resulting mixture was mixed thoroughly and add to 3.3 wt. hours of diisocyanate. The mixture is stirred, poured into a form and for a speedy setting is placed in a heat chamber and incubated for 15-20 min at 80oC, then a day at room temperature. The resulting foam is subjected to physico-mechanical tests. Similarly carry out the method with other content components. Example 2 (present method). In Salvia Laperla-3503 with a diisocyanate, a = content of NCO-groups to 2.8 wt. % with 50 synthetic butadiene-styrene latex SCS-With a dry matter content of 55 wt.% (THE 38.103230-85). Mixing lead for 3 min, then the mixture is then poured into the form and kept in a heating Cabinet at 80oC within 60 minutes After cooling from the form pull elastic foam. The resulting foam is subjected to physico-mechanical tests. Examples 3-4 analogous to example 2. The ratio Polyoxypropylenediamine and latex SCS-S (wt.) 80:20 and 20:80, respectively. The examples 5 and 6 is similar to example 2. As Polyoxypropylenediamine use the products of interaction of Laprol-4503 and Laperla-6003 with diisocyanate. Examples 7-8 analogous to example 2. The content of NCO-groups in Polyoxypropylenediamine respectively 2.0 and 4.0 wt.%. Example 9 same as example 2. As latex uses latex butadiene-vinylidenechloride DWHB-70 with a dry matter content of 27 wt.% according to OST 38.03204-80. Example 10 same as example 2. As use latex natural latex with a dry matter content of 60 wt.%. Example 11 same as example 2. As use synthetic latex water dispersion of polisar the ERU 2. As latex uses latex butadiene-styrene SCS-GP with a dry matter content of 35 wt.% according to GOST 10564-75. Examples 13-14 analogous to example 2. As Polyoxypropylenediamine use the product of the interaction of Laprol-3503 with MDI (diphenylmethanediisocyanate) and PIZ (polyisocyanate) with a content of NCO-groups of 2.4 and 2.9 wt.% respectively. The foams obtained in examples 2-14, were tested for elasticity, conditional tensile strength, residual strain in compression 50% resistance to long-term compression and fatigue under cyclic compression. The apparent density of the material is determined according to GOST 409-68 relative sample mass to its volume. The elastic rebound determine the share of energy returned by the sample, relative to the energy of free-falling pendulum. Use pendulum elastomer with brisk hemispherical shape with a radius of 15 mm and the distance from the axis of rotation of the pendulum to the center of the stroke 200 mm Conditional tensile strength determined on samples cut from a billet thickness of 10 mm according to GOST 15873-70. The residual deformation of the elastic foams under compression by measuring the C flexible molded polyurethane foam", assessing the relative residual deformation after 5000 cycles of compression at 75% strain. Data on physical-mechanical indicators listed in the table (see the end of the description). Thus, the claimed method of producing foam less time-consuming due to the use of a smaller number of components and the need for their accurate dosing. The foam obtained in this way has a 3.5-14.5 times greater elasticity, 2.5 times more conditional tensile strength, 1.3-2.4 times greater resistance to long-term compression and 1.3-2.1 times to cyclic compression compared to the prototype, which expands the area of its use. Party foam by the present method obtained in NPF Tamerlan" and was successfully tested. Method for elastic foam by foaming isocyanatobenzene product in the presence of a catalyst, emulsifier, foaming agent, characterized in that as isocyanatobenzene product use Polyoxypropylenediamine with a content of NCO-groups from 2.0 to 4.0 wt. %, and as a catalyst, emulsifier, foaming agent and, optionally, a polymeric matrix and openposition (20 - 80) : (80 - 20).
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