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Prepregs and moulded products, obtained from them at lower temperature Claimed group of inventions relates to prepregs and components, obtained from them at lower temperature. Described are prepregs consisting mainly of: A) at least one fibrous base, and B) as matrix material of at least one urethdione group-containing powder-like polyurethane composition with high reaction ability, which contains mainly: a) at least one urethdion group-containing hardening agent based on products of polybonding of aliphatic, (cyclo)aliphatic or cycloaliphatic polyisocyanates with urethdione groups and compounds with hydroxyl groups, which is in solid form at temperature below 40°C, and in liquid form at temperature higher than 125°C and contains less than 5 wt % of free NCO-groups and from 3 to 25 wt % of urethdione groups, and b) at least one polymer with hydroxyl groups, which is in solid form at temperature below 40°C, and in liquid form at temperature higher than 125°C, and possesses hydroxyl number from 20 to 200 mg KOH/g, c) from 0.1 to 5 wt % of at least one catalyst, selected from the group, including quaternary ammonium salts and/or quaternary phosphonium salts with halogens, hydroxides, alcoholates or anions of organic or inorganic acids as counterions, and d) from 0.1 to 5 wt % of at least one cocatalyst, selected from the group, including: d1) at least one epoxide, with components a) and b) being taken in such ratio that for each hydroxyl group of component b) there is from 0.3 to 1 urethdione group of component a). Also described is method of obtaining said prepregs, and their application. Method of manufacturing components from composite material is described, with said prepreg, in temperature interval from values higher than 100°C and to 160°C, being pressed in suitable form under pressure and if necessary uncer vacuuming. Components from composite material, obtained by claimed method, are described. |
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Composition for producing rigid sputtered polyurethane foam Composition contains a hydroxyl-containing compound - oxypropylethylenediamine and an ether based on propylene oxide, a catalyst - dimethylethanolamine, a foaming agent - water, a foam regulator, polyisocyanate and a fire retardant, wherein the foam regulator is a surfactant based on non-hydrolysable silica gel copolymer; the composition further contains an ether based on ethylene oxide with ethylene glycol, a fire retardant in form of trichloropropyl phosphate and a mixture of catalysts - triethylenediamine/dipropylene glycol, pentamethyldiethylenetriamine, with the following ratio of components, wt%: oxypropylethylenediamine 7-12; ether based on propylene oxide 7-9; ether based on ethylene oxide with ethylene glycol 7-9; dimethylethanolamine 1-1,2; triethylenediamine/dipropylene glycol 1.3-1.5; pentamethyldiethylenetriamine 2.8-3; trichloropropyl phosphate 10-12; water 5.2-5.4; non-hydrolysable silica gel copolymer 1.1-1.2; polyisocyanate 50.1-53.1. |
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Present invention relates to a reactive isocyanate mixture used as a polyol component when producing polyisocyanurates, comprising a trimerisation catalyst selected from alkali metal carboxylates, quaternary ammonium carboxylates, wherein the carboxylates contain 1-12 carbon atoms, and obtained by reacting phthalic anhydride and/or trimellitic anhydride with a polyol having an average equivalent weight of 100-2500 and an average nominal hydroxyl functionality of 2-8, in such amounts that the molar amount of the anhydride ranges from 0.1 to 99% of the hydroxyl equivalent amount of the polyol, wherein the ratio of the number of carboxylic acid groups to the number of ester groups, both formed in the reaction between the anhydride groups and the polyol, is 0.9-1.1 to 1 and wherein at least 60% of the anhydride groups have reacted. The invention also describes a polyisocyanate composition containing said mixture, a binder composition containing such a polyisocyanate composition, use of such compositions to produce polyisocyanurates and polyisocyanurates. |
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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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Method of producing viscoelastic polyurethane plasticised foam plastic with open cells Invention relates to a method of producing viscoelastic polyurethane plasticised foam plastic with open cells produced from renewable material, used in many engineering fields, particularly inside motorcars, in furniture and mattresses or sound insulation. The method involves reaction of a) polyisocyanates with b) a mixture of polyols and c) foaming agents. The mixture of polyols b) consists of bi) compounds with at least two hydrogen atoms which are active with respect to isocyanate groups, and hydroxyl number ranging from 20 to 100 mg KOH/g, bii) a compound with at least two hydrogen atoms which are active with respect to isocyanate groups, and hydroxyl number ranging from 100 to 800 mg KOH/g, and biii) a compound with at least one and a maximum of two hydrogen atoms which are active with respect to isocyanate groups, and hydroxyl number ranging from 100 to 800 mg KOH/g, wherein each of the components bi) and bii) contains at least one compound which contains renewable material or reaction products thereof. |
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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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Method of producing polyisocyanurate polyurethane material Invention relates to an elastomeric polyisocyanurate polyurethane material with 5-45% content of hard blocks, Shore hardness A 10-99 (DIN 53505) and elongation at fracture 5-1000% (DIN 53504), as well as a method of producing said material. Said material is obtained by reacting polyisocyanate with a component which is capable of reacting with isocyanate, where the reaction is carried out at isocyanate index ranging from 150 to 5000 and in the presence of a trimerisation catalyst. The polyisocyanate contains a) 80-100 wt % diphenylmethane diisocyanate which contains at least 40 wt % 4,4'-diphenylmethane diisocyanate and/or modified diphenylmethane diisocyanate which, at temperature 25°C, is a liquid and has NCO value of at least 20 wt % (polyisocyanate a), and b) 20-0 wt % of another polyisocyanate (polyisocyanate b), wherein the amount of polyisocyanate a) and polyisocyanate b) is calculated based on the total amount of polyisocyanate a) and polyisocyanate b). The component which is capable of reacting with isocyanate contains a) 80-100 wt % polyether polyol with average nominal functionality 2-6, average equivalent weight 1100-5000 and oxyethylene (EO) content 50-90 wt %, and b) 20-0 wt % of another one or more groups of compounds capable of reacting with isocyanate, where the amount of polyol a) and compound b) is calculated based on the total amount of polyol a) and compound b). |
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Invention relates to a multilayer coating system comprising at least one layer a) and at least one layer b), where at least one layer a) and at least one layer b) have at least one common boundary. Layer a) contains a coating composition a) which contains at least one compound with an isocyanate functional group, a base with latent photosensitivity and at least one compound with a thiol functional group. Layer b) contains an aqueous coating composition b) which contains at least 17 mol/kg with respect to the weight of the coating composition b), a catalyst for an addition reaction of at least one compound with a thiol functional group and at least one compound with an isocyanate functional group. The invention also describes a method of producing a multilayer coating system comprising the following steps: (i) applying a coating b) onto a substrate, (ii) applying a layer a) before or after applying layer b) and (iii) hardening layer a) at room temperature or high temperature, optionally supported by irradiation with ultraviolet and/or visible light. Described also is a method of increasing hardening viscosity in the multilayer coating system, involving applying a transparent coating composition a) on top of the base coating layer b) obtained from the aqueous basic coating composition b). |
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Method of moulding rigid foamed polyurethanes with improved thermal conductivity Present invention relates to moulding rigid foamed polyurethane for use in household electric appliances, having ratio of the density of the moulded foamed polyurethane (kg/m3) to λ(10°c) (mW/m·K), measured 2 hours after obtaining the foamed polyurethane, between 1.65 and 2.15, as well as moulded density of 33-38 kg/m3. Given foamed polyurethane is obtained by injecting the reaction mixture into a closed mould with compacting factor of 1.03-1.9, where density of the mould at low pressure is between 300 and 950 mbar, and the reaction mixture contains: (A) organic polyisocyanate, (B) physical foaming agent, (C) polyol composition containing at least one polyol with functionality equal to or greater than 3 and hydroxyl number between 300 and 800, (D) water making up of 0-2.5 wt % of the overall polyol formulation, (E) catalyst and (F) auxiliary substances and/or additives. |
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Method of producing polyisocyanurate polyurethane material Method involves reaction of polyisocyanate and a component capable of reacting with isocyanate, where the reaction takes place at isocyanate index between 1600 and 100000 and in the presence of a trimerisation catalyst, and where content of hard blocks is at least equal to 50%. The polyisocyanate contains a) 75-100 wt % diphenyl methane diisocyanate which contains at least 40 wt % 4,4'-diphenyl methane diisocyanate and/or a derivative of the said diphenyl methane diisocyanate, which is liquid at 25°C and has NCO value of at least 20 wt % (polyisocyanate a), and b) 25-0 wt % of another polyisocyanate (polyisocyanate b), where the amount of polyisocyanate a) and polyisocyanate b) is calculated based on total amount of that polyisocyanate a) and polyisocyanate b). The component capable of reacting with isocyanate contains a) 80-100 wt % polyether polyol having average nominal functionality of 2-6, average equivalent weight of 1100-5000 and oxyethylene content of 65-100 wt %, and b) 20-0 wt % of one or more groups of compounds capable of reacting with isocyanate, where the amount of polyol a) and compound b) is calculated based on total amount of that polyol a) and compound b). |
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Method of producing polyisocyanurate polyurethane material Invention relates to a method of producing polyisocyanurate polyurethane material which is used for making soles of football boots and ski boots, automobile parts, for example armrests, door panels, backseat panels and visors. The method involves reacting polyisocyanate and a polyol component, which is capable of reacting with isocyanate, where the reaction is carried out at isocyanate index ranging from 150 to 1500 and in the presence of a trimerisation catalyst. Polyisocyanate consists of a) from 80 to 100 wt % diphenylmethanediisocyanate, which contains at least 40 wt % 4,4'-diphenylmethanediisocyanate and/or derivative of said diphenylmethanediisocyanate, which is liquid at 25°C, with NCO index equal to at least 20 wt % (polyisocyanate a) and b) 20 to 0 wt % of the other polyisocyanate (polyisocyanate b). The polyol component consists of a) from 80 to 100 wt % polyether polyol with average nominal functionality ranging from 2 to 6, average equivalent weight ranging from 150 to 1000, average molecular weight ranging from 600 to 5000, content of oxyethylene (OE) ranging from 75 to 100 wt %, and c) from 20 to 0 wt % of one or more other compounds which are capable of reacting with isocyanate, except water, where amount of polyol a) and compound b) are rated for total amount of polyol a and compound b). |
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Composition for obtaining rigid foampolyurethanes for heat-insulating purpose Composition includes oxypropylated saccharose, oxypropylated glycerin, oxypropylated ethylenediamine, foaming agent-water, catalyst - dimethylethanolamine, foam-stabiliser - surface-active substance based on oxyalkylene methylsiloxane block-copolymers, polyisocyanate, additionally contains polyether, representing mixture of polyols and having hydroxyl number within 329-461 mg KOH/g and viscosity according to viscometer "ВЗ-246" at temperature 20°C, equal 60 c, and antipyrene additive -tri-(β-chlorethyl)phosphate. |
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Method for preparing rigid urethane-modified foam polyisocyanurates Invention relates to a method for synthesis of rigid urethane-modified foam polyisocyanurates. Method involves reaction of organic polyisocyanate with polyfunctional component possessing reaction capacity with respect to isocyanate groups at isocyanate index in the range from 150 to 450%. Reaction is carried out in the presence of carboxylic acid, water foam forming agent and/or hydrocarbon, and/or fluorohydrocarbon and metal salt as a trimerization catalyst taken in the amount in the range from 0.5 to 5 wt.-% as measured for the composition possessing reaction capacity with respect to isocyanate groups. Invention provides design of system providing good conversion degree to isocyanurate and obtaining good refractoriness. |
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Composition for polymeric material with assigned modulus of elasticity Invention relates to a method for preparing colored monolith constructional materials based on polyisocyanurates. Invention describes a composition used in preparing polymeric material with assigned modulus of elasticity comprising 100 mas. p. p. of polypropylene glycol of molecular mass 2200 Da, 21.5-117.5 mas. p. p. of aromatic diisocyanate and 3.2-6.0 mas. p. p. of dye sudan blue G as a catalyst. Material prepared on the base of the claimed composition possesses the value of modulus of elasticity at the level 1505 MPa. This allow its using in shoe and tire industry. |
Another patent 2551264.