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Invention relates to an epoxy resin-based composition. The composition includes epoxy resin, a polyol and a carboxamide compound, where the carboxamide compound has the formula NH2-CO-R, where R is 1) -NR1R2, 2) an alkyl having 1-10 carbon atoms and optionally including 1-3 hydroxyl and/or ether groups 3) phenyl or 4) tolyl, where R1 and R2 are independently selected from a hydrogen atom, hydroxy, phenyl, tolyl and alkyl, having 1-6 carbon atoms and optionally including a hydroxy- and/or ether group, and a mixture of said compounds, and where the number of hydroxyl equivalents per epoxide equivalent is 0.02-100 and preferably 0.03-50 and most preferably 0.05-10, and the number of carboxamide equivalents per epoxide equivalent is 0.0005-1 and preferably 0.005-0.7 and most preferably 0.01-0.5. A curable composition for producing a polyurethane-polyisocyanate material, which can be obtained by combining and mixing said epoxy resin-based composition and an aromatic polyisocyanate-based composition, which includes a polyisocyanate, lithium halide and urea compound, where the number of lithium halide moles per isocyanate equivalent is in the range of 0.0001-0.04, and the number of urea equivalents + biuret per isocyanate equivalent is in the range of 0.0001-0.4. The invention also relates to use of said carboxyamide compound to prolong the shelf life of the curable polyisocyanate-based composition. |
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Method of producing uretonimine-modified isocyanate composition Invention relates to a method of producing an uretonimine-modified isocyanate composition. The disclosed method includes producing an organic isocyanate composition having two or more isocyanate groups, reacting said polyisocyanate composition in the presence of a suitable catalyst to obtain a uretonimine-modified isocyanate composition having carbodiimide groups and uretonimine groups, and deactivating the catalyst by adding a certain amount of an oxalic acid monoalkyl ester halide. |
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Method of producing polymers using 1,6-hexanediol containing less than 500 ppm of aldehyde Disclosed is a method of producing a polymer, which includes reacting 1,6-hexanediol with dicarboxylic acids or diisocyanates in the presence of at least one catalyst, wherein the 1,6-hexanediol used is 1,6-hexanediol which, after production thereof by hydrogenation, is subjected to distillation at least once, where the molar ratio of oxygen to 1,6-hexanediol is less than 1:100, and which, during the distillation process, contains ≤5 ppm of catalytically active components and less than 500 ppm of aldehyde. |
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Polyurethane coating composition Polyurethane coating composition contains polyoxypropylene triol with molecular weight of 3000-5000, polyisocyanate based on 4,4'-diphenylmethane diisocyanate, dibutyltin dilaurate, diol and a solvent. The diol used is 2,2-bis-[4-(2-oxyethoxy)-phenyl]-propane. |
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Polyurethane coating composition Polyurethane coating composition contains polyol, polyisocyanate based on 4,4'-diphenylmethane diisocyanate and a solvent. The polyol is 2,2-bis-[4-(2-oxytriethoxy)-phenyl]-propane. |
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Soil reinforcement composition Invention relates to compositions sued as binder for soil, and can be used in construction and mining. A two-component composition for reinforcing soil by injection contains as an isocyanate component polyphenylene polymethylene polyisocyanate containing 30-31% NCO groups, and as a hydroxyl component a homogenous mixture of alkoxylated alkanetriol with molecular weight of 370-500, ethylene glycol, a urethane-forming catalyst selected from a group comprising dimethylethanolamine and methyldiethanolamine, potassium acetate and a diluent selected from a group comprising chlorinated paraffin wax CP-470 and a mixture thereof with dibutyl phthalate, with content of the isocyanate and hydroxyl components in equal volumes. |
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Present invention relates to a two-component coating system at least comprising: (A) a polyisocyanate component consisting of (a) a polyisocyanate component based on an aromatic prepolymer having allophanate groups and (b) a polyisocyanate component based on (cyclo)aliphatic polyisocyanate, (B) amino functional cross-linking agents based on aromatic diamines, wherein up to 49 wt % of said amino functional cross-linking agents can be replaced with amino functional polymers based on aspartates. Also described is a coated substrate obtained using said system. |
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Method of producing rigid foamed polyisocyanurates using polyols of natural oils Method of producing a rigid foamed polyisocyanurate involves reaction at isocyanate index from about 175 to about 400 of polyisocyanate with at least one polyol of natural oil containing at least about 35 wt % with respect to the weight of polyl natural oil, having hydroxyl number from about 175 to about 375 and hydroxyl functionality from about 2.0 to about 2.8, in the presence of a foaming agent and optionally in the presence of one or more surfactants, flame-retardants, pigments, catalysts and fillers, in which the obtained foamed plastic has content of materials based on renewable biological material of at least 8 wt %. |
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Soil reinforcement composition Invention relates to two-component composition for soil reinforcement by injection. The composition contains an isocyanate component and a hydroxyl component in equal volumes. The isocyanate component is polyphenylene polymethylene polyisocyanate containing 30-31% NCO groups. The hydroxyl component is a homogeneous mixture of an alkoxylated alkane diol or triol, with molecular weight of 370-600 or a mixture thereof, alkane diol or alkoxylated alkane diol with molecular weight of 60-200 and a urethane-formation catalyst. The urethane-formation catalyst is selected from a group comprising diazabicyclooctane, tin dibutyl dilaurate, dimethyl ethanolamine and methyl diethanolamine. |
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Polyurethane coatings characterised by improved interlayer adhesion Composition contains: (a) an isocyanate component containing an aliphatic isocyanate and an aromatic isocyanate, and (b) a polyol component containing an acrylic polyol and a polyester-polyol, wherein the acrylic polyol contains a mixture of a hard acrylic polyol with glass transition temperature (Tg) higher than 20°C and a soft acrylic polyol with Tg lower than 20°C. Also described is a method of teating an aged polyurethane surface using said composition, as well as a substrate having an aged polyurethane surface and a polyurethane coating from the disclosed composition. |
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Polyurethane elastomer and method of its obtaining Claimed invention relates to casting polyurethane elastomer and to method of its obtaining. Said elastomer includes product of reaction: (a) of prepolymer with end NCO-groups, (b) aliphatic diisocyanate and (c) aromatic di- or polyamine, where reagents are present in such amounts that equivalent ratio of NCO-groups to the sum of reaction-able NCO-groups is in the interval from 0.8:1 to 1.2:1. Component (a) is obtained by interaction of: (1) diphenylmethanediisocyanate with content of 2,4'-MDI-isomer more than 80 wt %, with (2) highly molecular polyol, selected from group, consisting of polyoxyalkylenepolyols with the mean molecular weight from 250 to 10000, complex polyester polyols with mean molecular weight from 250 to 10000, and their mixtures, at temperature from 30°C to 150°C, during time sufficient for formation of prepolymer with end NCO-groups, OH-groups of said polyol reacting with NCO-groups of said diphenylmethane diisocyanate in the range from 1.5 : 1 to 20 : 1. Component (b) is selected from group, consisting of isomers of 1,1'-methylenebis(4-isocyanatocyclohexane), 1,4-cyclohexane diisocyanate, isoforon diisocyanate, 1,3-xilylene diisocyanate, hexamethylene diisocyanate, isomers of m-tetramethylxylylene diisocyanate (TMXD1), their mixtures and their prepolymers. |
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Polyisocyanurate based adhesive Present invention relates to a polyisocyanurate based adhesive which is obtained by reacting an organic polyisocyanate with a compound containing hydrogen atoms which are reactive towards isocyanate, in the presence of a trimerisation catalyst. The organic polyisocyanate is a polymer or prepolymer polyisocyanate, and content of the soft block in the adhesive ranges from 40 to 60 wt %. A reaction mixture for producing said adhesive is also described. |
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Invention relates to microcapsules used in agrochemical compositions as part of any type of composition used to in agriculture, as well for microencapsulation of pharmaceutical and medical compounds, flame-retardants, phase transition materials, thermosetting materials, ink and catalysts. The microcapsules contain a material with water solubility of less than 750 mg/l at 20°C. The wall of the microcapsules is formed via interphase polymerisation of materials which form the wall: (a) aliphatic isocyanate(s), and (b) aromatic isocyanate(s), and (c) compound(s) of formula (I), acetylene carbamide derivatives |
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Method of producing polyisocyanurate composite material Invention relates to a method of producing polyisocyanurate composite material, involving merging polyisocyanate, monoatomic alcohol polyester and a trimerisation catalyst, - these three components, merged together, are called a "reactive binding composition", - with binding material to form a reactive composite material, which allows, during the next step, high-temperature reaction of said reactive composite material, in which the amount of the reactive binding composition is equal to 1-60 wt % and the amount of the binding material is equal to 40-99 wt %, both in terms of the amount of the reactive binding composition plus the amount of the binding material, and in which the amount of polyisocyanate and monoatomic alcohol is such that the reactive binding composition index is equal to 150-10000, wherein the monoatoic alcohol polyester has average equivalent weight of 10-2500 and content of oxyethylene is at least 65 wt %. The invention also describes said reactive composite material and composite materials obtained using said method and from disclosed reactive composite materials. |
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Amphiphilic polymer compositions and use thereof Invention relates to an amphiphilic polymer composition used in compositions of active substances used for protecting plants from pathogens, phytopathogens or wood destroying fungi, insects etc, or in compositions of additives to food products. The given composition is obtained by reacting (i) at least one hydrophobic polymer P1, which is made from ethylene unsaturated monomers M1, and (ii) at least one hydrophilic polymer P2, which is in form of aliphatic polyethers consisting of at least 50 wt % ethylene oxide groups, with (iii) at least one compound V containing isocyanate groups, which has functionality of 1.5-4.5 relative the isocyanate groups, and is selected from aliphatic, cycloaliphatic and aromatic di- and polyisocyanates, as well as from isocyanurates, allophanates, uretdiones and biurets. Ethylene unsaturated monomers M1 contain: (a1) from 50 to 99 wt % in terms of total amount of monomers M1, monomers M1a of general formula I and a2) from 1 to 50 wt % in terms of total amount of monomers M1, neutral monoethylene unsaturated monomers M1b, which differ from monomers M1a, and are selected from vinylaromatic monomers, C11-C20alkylacrylates and C11-C20alkylmethacrylates. |
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Catalyst is a product of reacting compounds (a) and (b). Compound (a) is a mixture of (i) a compound which contains at least one opxy group with (ii) a compound which contains an alcohol, amino-, thio- or carboxyl group and an aldehyde or ketone group. Compound (b) contains at least one primary amino group and at least one tertiary amino group. |
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Method of producing polyisocyanates Invention relates to the method of producing polyisocyanate, which involves (a) formation of polyisocyanate in a reaction system through reaction of polyamine, on which polyisocyanate is based, in a solution of inert solvent with phosgene, optionally in a solution of inert solvent; (b) separation of solvent from polyisocyanate, formed at stage (a) by evaporation or fractional distillation; (c) bringing the separated solvent to temperature between 10°C and 150°C and subsequent processing of the separated solvent with isocyanate trimerisation catalyst for trimerisation of isocyanate impurities in the separated solvent; (d) transferring the processed solvent from stage (c) to the reaction system at stage (a). |
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Method of polyurethanedi(met)acrylates production Invention concerns method of obtaining polyurethanedi(met)acrylates applicable as binders for powder coatings applied on metal substrates, plastic parts, fiber-reinforced plastic parts. Polyurethanedi(met)acrylates are obtained by interaction of diisocyanate component, diol component and hydroxy-C2-C4-alkyl(met)acrylate at mol ratio of x:(x-1):2, where x takes any value from 2 to 5. 1,6-hexanediisocyanate comprises 50 to 80 mol % of diisocyanate component, and one or two diisocyanates selected out of defined diisocyanate group where mol content of respective diisocyanates amount to 100 mol % comprise(s) 20 to 50 mol %, so that each diisocyanate comprises at least 10 mol % of diisocyanate component. Diol component includes not more than four different diols, and at least one linear aliphatic alpha, omega-C2-C12-diol comprises 20 to 100 mol % of diol component, while at least one (cyclo)aliphatic diol different from linear aliphatic alpha, omega-C2-C12-diols comprises 0 to 80 mol %. Each diol of the diol component comprises at least 10 mol % of diol component, and mol content or respective diols amounts to 100 mol %. Due to the absence of solvent in polyurethanedi(met)acrylate production, further cleaning of end product is not required, thus increasing process product output. |
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Method of obtaining compounded foam polyurethane 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. |
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Invention pertains to polyurethane resin, which is a product of a reaction between at least one diisocyanate and components, containing functional groups, which have capacity to react with isocyanates, with the following composition: (a) first group, which is formed by one or more polyester-polyols based on ethers, each of which has average molecular mass ranging from 400 to 12000 g/mol, (b) second group, formed by one or more poly hydroxilated resins, chosen from a defined group of resins, (c) optional third group, formed by one or more polyols, each of which has average molecular mass, equal to or less than 800 g/mol, which are also chosen from a defined group of polyols, and (d) at least one amine and a reaction chain-stopping agent. The ratio of equivalent masses of diisocyanate and components, containing functional groups, with capacity to react with isocyanates, is chosen such that, naturally all isocyanate groups of diisocyanate are present as a product of the reaction with one of the above mentioned functional groups, with capacity to react with isocyanates. The invention also relates to the method of obtaining the above mentioned polyurethane resin, to polyurethane resin obtained through such methods, to coating for plastic substrates, containing the proposed resin, as a polyolefin binding substance, to use of such a polyurethane resin as a film forming substance in printing ink for printing on plastic substrates, as well as to the method of obtaining a laminate, which has a layer obtained when printing an image, including stages (a)-(d), with use of coating from polyurethane resin, and to a laminate, obtained using such a method. |
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Invention relates to compositions of molded polyurethane elastomers showing high physico-mechanical characteristics and providing high cyclic stability of products at alternate loadings within a wide operation temperature range. Invention may be used in rubber industry to manufacture cast tires and rolls for monorail vehicles. Composition according to invention contains polyoxytetramethylene glycol, mixture of 2,4-tolylenediisocyanate and 1,6-hexamethylenediisocyanate at molar ratio (0.8-0.9):0.1, and 3,3'-dichloro-4,4'-diaminodiphenylmethane in the form of solution in polyoxytetramethylene glycol at molar ratio (0.67-0.7):(0.29-0.30) as liquid hardener. |
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Invention relates to aromatic polyurethane polyols used as components of priming compositions. Invention describes the priming composition comprising aromatic polyurethane polyol including product of reaction: (a) at least one diol component among number of α,β-diols, α,γ-diols and their mixtures; (b) at least one triisocyanate; (c) at least one diisocyanate wherein at least one isocyanate is aromatic one, and molecular mass or aromatic polyurethane polyol is 3000 Da, not above, and a cross-linking agent also. Prepared aromatic polyurethane polyol shows viscosity value by Brookfield at the level 8260 centipoises, OH-number 192.6 KOH/g and the dispersity (Mn/Mw) at the level 3.0. Priming compositions prepared by using indicated aromatic polyurethane polyol are useful in finishing large means of transportation, for example, trains, trucks, buses and airplanes, in particular, in vehicle body works. Also, invention relates methods for applying priming compositions on support comprising applying indicated compositions, and to a method for finishing car in repairs comprising applying the indicated priming composition. |
Another patent 2551161.