Abstract: Binders for powder coatings comprising A) a solid unsaturated polyester and B) a polyurethane comprising (meth)acryloyl groups. These polyester-containing mixtures are distinguished by an improved blocking stability compared with polyurethane alone.

Abstract: The present invention relates to a crosslinkable polyester/isocyanate composition suitable for preparing composite manufactured articles endowed with high structural mechanical properties, by means of injection processes, comprising:A--a polyfunctional isocyanate;B--an unsaturated polyester resin, or a vinyl ester resin, or a mixture of both said resins, wherein said resin can contain free hydroxy groups;C--a free-radical polymerization initiator;D--a promoter of decomposition of (C) initiator;E--a catalyst of (A) isocyanate trimerization.

Abstract: Polyurethanes having utility, for example, as low profile additives, in polyester-based molding compositions, a method of preparing polyester-based molding compositions containing such polyurethane low profile additives and thermoset articles made with the method are disclosed. The disclosed polyurethane low profile additives can enhance the pigmentability of molded articles comprising the low profile additives. The low profile additives comprise the reaction product of a hydroxyl-terminated prepolymer and an anhydride such as a dicarboxylic acid anhydride, preferably reacted in the presence of a catalyst comprising an amine having from about 4 to 20 carbon atoms.

Abstract: A radiation-curable ink composition contains a vehicle mixture comprising: (A) at least one linear polyester oligomer and/or polymer substantially free of an acid group and free of a polymerizable double bond in a molecule, wherein 1 to 10 double bonds are pendent from the linear polyester chain, and/or mixture thereof, (B) at least one single double bond-containing carboxylic acid wherein the acid has at least one acid group, and/or carboxylic ester of the said acid, and/or carboxylic amide of the said acid, and/or mixture thereof, (C) a double bond-containing polycarboxylic ester, wherein 2 to 10 acid groups are present and at least 2 double bonds are pendent from the ester having 2 to 10 acid groups, (D) at least one double bond-containing fluorinated carboxylic ester, and/or block copolymer comprising a fluorinated alkyl group-containing polymer segment and a (meth)acrylic polymer segment, and/or block copolymer comprising a siloxane group-containing polymer segment and a (meth)acrylic polymer segment, an

Abstract: This invention is a thermoplastic saturated polyester low profile additive (low profile additive) useful in sheet molding compounds for parts, especially vehicle parts, the additive has a major component derived from aromatic compounds such as terephthalic acid including recycled polyethylene terephthalate. Asymmetrical glycols are an important ingredient and can be used to digest recycled PET to make oligomeric glycols which are reacted with acids having fewer than 12 carbon atoms to make one of the low profile additives of this invention.

Abstract: Thermosetting composition comprises a compound having in the molecule two or more carboxyl groups blocked by a vinyl ether compound, a vinyl thioether compound or a hetero compound having a vinyl type double bond and oxygen or sulfur as the hetero atom, a compound having two or more reactive functional groups which can form a chemical bond with the blocked carboxyl compound by heating, a specific vinyl ether or vinyl thioether and a thermal latent acid catalyst. The blocked carboxy group of the first compound and the reactive functional group of the second compound may be comprised in the same molecule. The thermosetting composition gives cured products having excellent chemical properties, physical properties, weathering resistant and storage stability and is advantageously utilized for coating compositions, ink, adhesive and molded plastics.

Abstract: A method of producing a thickened organic polymeric composition useful for molding and capable of resisting post-molding shrinkage after being crosslinked comprising a cross-linkable base resin dissolved in an unsaturated monomer, and an additive resin selected from saturated polyesters and saturated amide waxes, the additive resin being crystalline at ambient temperatures and having a melting point (T.sub.m) below a temperature (T.sub.c) at which the base resin cross-linking reaction proceeds at a significant rate. The base resin and additive resin have only a partial degree of compatibility. When cooled from a temperature between T.sub.m and T.sub.c to temperature between T.sub.m and ambient the composition thickens, whereas, when it is heated to a temperature below T.sub.c, it reverts to a flowable composition.

Abstract: This invention is the polycapped oligomer adduct of a long chain fatty acid with a multi hydroxy functional or multi epoxy functional compound. This polycapped oligomer is useful in resin compositions to enhance the performance of thermoplastic low profile additives which improve the surface quality of molded composites such as automotive body panels.

Abstract: A thickened organic polymeric composition useful for molding and capable of resisting post-molding shrinkage after being cross-linked comprises a cross-linkable base resin dissolved in an unsaturated monomer, and an additive resin selected from saturated polyesters and saturated amide waxes, the additive resin being crystalline at ambient temperatures and having a melting point (T.sub.m) below a temperature (T.sub.c) at which the base resin cross-linking reaction proceeds at a significant rate. The base resin and additive resin have only a partial degree of compatibility. When cooled from a temperature between T.sub.m and T.sub.c to a temperature between T.sub.m and ambient the composition thickens, whereas, when it is heated to a temperature below T.sub.c, it reverts to a flowable composition.

Abstract: A stabilized polysilazane obtained by reacting an inorganic polysilazane having a number average molecular weight of about 100 to about 100,000 with an alcohol, an organic acid, an ester, a ketone, an aldehyde, a mercaptan, or an alkysilazane preferably at a molar ratio of from 50/50 to 99.99/0.01 is described.

Abstract: The invention relates to polyester-polyurethane hybrid resins containing halogenated aromatic polycarboxylate moieties to obtain flame retardance without significantly affect the preparation, processing and physical properties of the hybrid resins.

Abstract: A curable adhesive composition comprising an unsaturated polyester oligomer (A) of any of the following formulae (I) to (IV), obtained by reacting a compound (a) having a hydroxyl group and/or an amino group, a cyclic acid anhydride (b) and an epoxide (c) having an ethylenically unsaturated group, and an adhesive polymer (B), ##STR1## wherein: R.sub.1 is a divalent organic moiety having 1 to 40 carbon atoms,R.sub.2 is a divalent organic moiety having 1 to 10 carbon atoms,R.sub.3 is hydrogen or methyl,R.sub.4 is a monovalent organic moiety having 1 to 40 carbon atoms,R.sub.5 is a monovalent organic moiety having 1 to 40 carbon atoms,R.sub.6 is hydrogen or a monovalent organic moiety having 1 to 10 carbon atoms, andn is an integer of 2 or greater.

Abstract: This invention relates to novel hydroxy-functional polyester diluents, and more particularly, to acrylic-modified hydroxy-functional polyester reactive diluents useful for blending with a variety of thermosetting or thermoplastic film-forming polymers. More specifically, the hydroxy-functional polyester reactive diluents are essentially low molecular weight polyesters derived from triols, and a combination of unsaturated monocarboxylic acids and saturated monocarboxylic acids. These hydroxy-functional polyester diluents may be copolymerized with one or more acrylic monomers, i.e. hydroxy-functional acrylic monomers, and blended with a variety of thermosetting or thermoplastic film-forming polymers. These blends of the film-forming polymers and the hydroxy-functional polyester diluents can be crosslinked with conventional crosslinking agents such as isocyanates and used in the formulation of low VOC paint compositions particularly useful as automotive topcoats.

Abstract: The invention relates to a resin composition containing low-molecular compounds which form a polyester urethane hybrid network. The resin composition contains a first component consisting of a condensation product of at least one diol and at least one unsaturated dicarboxylic acid material, a second component containing an ethylenically unsaturated monomer capable of copolymerizing with the first component, and a third component consisting of a polyisocyanate. The first component substantially consists of a diester compound of 2 diol molecules and 1 molecule of a dicarboxylic acid material, which dicarboxylic acid material consists of at least 75% of .alpha.-, .beta.-unsaturated dicarboxylic acid.

Abstract: A process for the solvent-free production of hydroxy-functional copolymers by copolymerization of unsaturated monomers in a mixture of a polyester component and an unsaturated ester component as reaction medium, the use of the hydroxy-functional copolymers so obtained as binder component in polyurethane powder coatings, a powder coating based on these copolymers and its use for coating any heat resistant substrates.

Abstract: The polyurethane oligomer reaction product of a hydroxyl-terminated prepolymer with a dicarboxylic acid anhydride is incorporated into conventional thermosetting polyester resin formulations to impart improved impact properties and reduced shrinkage behavior.

Abstract: An aqueous, alcoholic or hydroalcholic composition containing one or more oligomers or prepolymers that are polymerized in-situ, while the oligomer(s) is in contact with the hair, for in-situ formation (polymerization) of a polymer. The oligomer compositions contain essentially no toxic, hazardous or harmful monomer(s), such as resorcinol.

Abstract: The present invention relates to compositions which may be cured by radical polymerization at room temperature and containA) 20 to 100 parts by weight of .alpha.,.beta.-ethylenically unsaturated polyesters which are the reaction products ofa) a dicarboxylic acid component containing i) 40 to 100 carboxyl equivalent % of .alpha.,.beta.

Abstract: The present invention provides an improved coextruded medical grade port tubing. The medical grade port tubing provides characteristics that are desirable in the medical industry and therefore can be used as a medical port tubing in, for example, renal therapy or blood donor tubes. To this end, the present invention provides a non-PVC coextruded medical grade port tubing including: an outer layer comprising a blend of polypropylene copolymer and styrene-ethylene-butylene-styrene copolymer; a tie layer; and a core layer including a blend of polyamide and ethylene vinyl acetate.

Abstract: The thermo-setting reaction adhesive present as a mono-component system contains as its essential components respectively at least a) one unsaturated scaffold polymer based on a non-cross-linked elastomer in a share of 5 to 90% by weight, b) one unsaturated polyester in a share of 5 to 90% by weight, c) one unsaturated cross-linking agent in a share of 0.1 to 50% by weight, d) one setting catalyst which provides radicals with an activation temperature of 60.degree. to 300.degree. C. in a share of 0.2 to 6% by weight and f) optionally other additives. The adhesive is distinguished by high storage stability and high adhesive strength with a short cross-linking time and it is particularly suitable for bonding thermo-shrinking molded parts.

Abstract: Vinyl-terminated polyesters and vinyl-terminated aliphatic polycarbonates are described which improve the flexibility and elongation at failure of cured samples of unsaturated polyesters or vinyl ester resins both at room temperature and at high temperatures, and without significant loss of surface quality or other mechanical properties. Further, these polymers do not phase separate from uncured polyester resin/styrene solutions, do not significantly increase the initial viscosity of molding compositions in which they have been incorporated, and do not negate the effect of low shrinkage additives during cure.

Abstract: A polymerizable composition contains unsaturated urethane shown by Formula (1) given below, vinyl monomer which is copolymerizable with this unsaturated urethane, and an inorganic powder filler at weight ratio of (unsaturated urethane)/(vinyl monomer)=10/90-90/10, the inorganic powder filler being 30-300 weight parts with respect to 100 weight parts of the sum of the unsaturated urethane and vinyl monomer: ##STR1## where R.sup.1 is hydrogen atom or methyl group; X is a residual group obtained by removing isocyanate groups from diisocyanate; Y is a residual group obtained by removing hydroxyl groups from non-radical polymerizable di-ol or tri-ol of a specified kind; Z is an organic group in the form of (R.sup.2 O).sub.m or R.sup.3 O, R.sup.2 being an alkylene group with 2-4 carbon atoms, R.sup.3 being an alkylene group with 2-12 carbon atoms, and m being an integer 2-10; and n is 2 or 3.

Abstract: Amine-containing, water dispersible polyurethanes made by the following process: (1) in a reactive diluent such as acrylate, methacrylate, acrylonitrile monomer, low viscosity epoxy compound or epoxy resin, or mixture thereof, using an excess amount of polyisocyanate to react with polyol to form NCO-terminated urethane prepolymer; (2) adding hydroxy alkyl acrylate or hydroxy alkyl methacrylate monomer to react with the prepolymer in step (1) to convert its -NCO end group into alkyl acrylate or alkyl methacrylate end group; and (3) using an excess amount of polyamine to react with the alkyl (meth)acrylate-terminated prepolymer in step (2) and the reactive diluent and the residual hydroxy-containing monomer in step (2), if any. The polyurethane can be mixed with a crosslinking agent having multi-epoxy or blocked polyisocyanate functionalities, to prepare a stable aqueous coating composition.

Abstract: Polyester-polyurethane hybrid resin molding compositions having low levels of unsaturation which are modified by the addition of a low profile additive to provide glass-reinforced articles that have improved surface profiles and improved processability compared to commercial low profile-modified unsaturated (non-hybrid) polyester resins.

Abstract: Urethane-catalyzed polyester-polyurethane hybrid resin molding compositions are prepared using a low profile additive to provide glass-reinforced articles that have improved surface profiles and improved processability compared to commercial low profile-modified unsaturated non-hybrid polyester resins.

Abstract: The present invention relates to a process for the manufacture of a cast, injection moulded or compression moulded articles by curing a resin composition in a desired shape using catalysts, and allowing the shaped piece to post-cure under such conditions that an HDT of at least 150.degree. C. is obtained. The resin composition comprises a polyisocyanate, an ethylenically unsaturated monomer and a vinyl ester compound, and the vinyl ester compound contains on average about two to about 6 (meth)acrylate groups and on average about two to about 6 hydroxyl groups, and has a molecular weight higher than 300. The invention also relates to a resin composition suitable for use in the process.

Abstract: Textiles substrates, e.g., cotton fabrics, are conditioned to impart good feel and hydrophilicity thereto, by impregnating same with an effective conditioning amount of a polydiorganosiloxane containing, per mole, at least two structural units of the formula:XR.sub.a SiO.sub.(3-a)/2in which X is a radical: ##STR1## R' is a linear or branched C.sub.2 -C.sub.8 alkylene radical; R" is a hydrogen atom or a C.sub.1 -C.sub.6 alkyl radical; the radicals R, which may be identical or different, are each a phenyl radical, a 3,3,3-trifluoropropyl radical or an alkyl radical having from 1 to 4 carbon atoms; a is either 1 or 2; n is a number ranging from 1 to 10; and t is 0 or 1.

Abstract: Adducts obtainable by reacting (a) an epoxy resin having a OH value of 0.02-1.5 equivalents/kg and (b) a di- or polyisocyanate, said reaction being carried out with exclusion of moisture and essentially without a catalyst, can subsequently be converted by reaction with an inhibitor (c), preferably an acrylate, into storage-stable adducts.The adducts can be cured in the presence of a latent hardener conventionally used for EP/IC resin systems in a weakly exothermic reaction to give crosslinked products which have excellent properties.

Abstract: Additives which improve the low-temperature properties of distillate fuels are the oligomeric/polymeric reaction products of one or more bicyclic or alkyl anhydrides or their diacid equivalents and one or more long-chain epoxides or their corresponding acid/diol equivalents, with optional termonomers.

Abstract: The present invention relates to a coating composition which is liquid and storable at room temperature and wherein the binder is based on a mixture of A) a crosslinking component containing at least one amino resin and/or at least one blocked polyisocyanate and B) a polyester component containing at least one hydroxyl- and carboxyl-functional polyester which also contains olefinic double bonds incorporated through unsaturated dicarboxylic acids. The present also related to coated substrates prepared from this coating composition.

Abstract: Improved acoustic damping materials comprise interpenetrating polymer netks having a soft polymer component and a hard polymer component. The soft polymer component, constituting from 75 to 95, preferably 90, percent by weight of the material, is made by polymerizing an aromatic diisocyanate with a polyalkylene ether glycol, and the hard polymer component is a vinyl ester polymer made by polymerization of the acrylate or methacrylate ester of the diglycidyl ether of a polyphenol. The curing of the mixture is carried out at room temperature in presence of a peroxide and an aromatic amine. The mixture of ingredients, while liquid, may be injected into mechanical devices, such as shafts of rotating equipment whose noise is to be dampened, and allowed to cure therein.

Abstract: Improved acoustic damping materials comprise interpenetrating polymer netks having a soft polymer component and a hard polymer component. The soft polymer component, constituting from 50 to 90, preferably 70, percent by weight of the material, is made by polymerizing an aromatic diisocyanate with a polyalkylene ether glycol, and the hard polymer component is a vinyl ester polymer made by polymerization of a vinyl ester resin such as the acrylate or methacrylate ester of the diglycidyl ether of a polyphenol. Optionally, the vinyl ester resin may be brominated, whereby increased fire retardance is conferred upon the interpenetrating polymer network. The mixture is cured at room temperature.

Abstract: The invention relates to a moulding compound based on thermosetting resin material and optionally fibers, fillers, curing catalysts and further usual additives, and is characterized in that the moulding compound comprises a mixture of at least two thermosetting resins of which a first resin is in a partly cured state, and of which a second resin is not, or less than the first resin in a partly cured state.

Abstract: A process is disclosed for producing molded parts from a polyester-based curable molding composition which includes a thermostetting unsaturated polyester resin, an ethylenically unsaturated monomer which is copolymerizable with the unsaturated polyester resin to provide crosslinking, a thermoplastic low profile additive material for shrinkage control and in addition, at least one highly reactive olefinically unsaturated crosslinkable monomer, this highly reactive olefinically unsaturated material being selected from the group consisting of:a) the di-acrylate or methacrylate of a diol selected from the group consisting of hexane diols, neopentyl glycol, butylene glycol, diethylene glycol, tetraethylene glycol, and tripropylene glycol;b) the tri-acrylate or methacrylate of trimethylol propane;c) the tetra-acrylate or methacrylate of pentaerythritol;d) the di-acrylate or methacrylate of an ethoxylated Bis Phenol A;e) the acrylate or methacrylate of isobornyl alcohol; andf) divinyl benzene.

Abstract: A novel ceramic composition having high strength at high temperatures and needing no degreasing step before its sintering step, and a process for producing the same are provided,which composition is obtained by calcining a molded body composed of alumina powder and a polysilazane in an inert gas such as nitrogen, argon, etc. and/or ammonia, or under pressure and at 800.degree.-1950.degree. C.

Abstract: The addition of elastomeric thermoplastic polymers and melamine resin to the polymer matrix of composite materials for the moulding of fibre-reinforced unsaturated polyester resin improves the surface characteristics, resilience, and mouldabilty and heat resistance thereof.

Abstract: Unsaturated polyester fiber reinforced molding compounds containing low profile additives achieve moldings with improved shrinkage control, improved surface appearance, less separation and lower coefficient of thermal expansion by the addition of lactams.

Abstract: The invention relates to sheet molding compounds having improved viscosity control comprising polyester-polyurethane hybrid resins formed by the reaction of an A side composition and a B side composition. The A side composition comprises a polyfunctional isocyanate compound and a free radical polymerization catalyst. The B side composition comprises a mixture of (i) an ethylenically unsaturated monomer solution having no active hydrogen groups which has dissolved therein about 40-90 weight percent of a substantially water-free, unsaturated polyester polyol having at least one dicarboxylic alkene moiety and having an acid number less than five; and (ii) a methacrylate ester of a C.sub.2 -C.sub.10 alkylene diol.

Abstract: Polyester-polyurethane hybrid resin molding compositions having a first, soft polyurea phase within a second, more rigid polyester-polyurethane phase are disclosed. The compositions are formed by the reaction of an A side composition and a B side composition. The A side composition comprises a polyfunctional isocyanate compound and a free radical polymerization catalyst. The B side composition comprises a mixture of (i) an ethylenically unsaturated monomer solution having dissolved therein about 40-90 weight percent of a substantially water-free, unsaturated polyester polyol having at least one dicarboxylic alkene moiety and having an acid number less than five; and (ii) a polyfunctional nitrogen-containing compound having at least one active hydrogen atom on each of at least two nitrogen atoms in each molecule, which, when reacted with the A side composition, has a molecular weight sufficient to form the first, soft polyurea phase.

Abstract: An ethylenically unsaturated isocyanurate composition suitable for formulating SMC systems for the molding of structural automobile body parts requiring high levels of adhesion is prepared by blending the isocyanurate composition with a minor amount of a dicyclopentadiene terminated unsaturated polyester. These parts have excellent retention of physical properties when exposed to high temperature.

Abstract: A polymerisable composition which comprises an unsaturated urethane, a C.sub.1 or C.sub.2 alkyl methacrylate and at least one other ethylenically unsaturated addition polymerisable substance copolymerisable therewith, such polymerisable compositions, where they contain an inorganic filler, overcome some of the problems associated with the polymerisable compositions described in European 0.064,809. Where the polymerisable substance comprises an unsaturated polyester, the shelf-life of the polymerisable composition can be extended by adding thereto a reagent which reacts with a portion of the free carboxyl group in the unsaturated polyester. The compositions may be used, for example, in the production of fibre-reinforced composites.

Abstract: Disclosed is a thermosetting resin composition which includes(a) an unsaturated polyester,(b) a polymer having a (meth)acrylate group only at one or both terminals of its main chain,(c) a poly(meth)acrylate oligomer,(d) a styrene monomer, and(e) a methyl methacrylate monomer.Also, a method of molding the resin is disclosed, which includes dividing the thermosetting resin composition into two parts, adding a curing agent to one of the two parts and a curing accelerator to another to form two partial compositions, introducing the two partial compositions into a mold, and allowing the two partial compositions to mix with each other and cure.

Abstract: The invention concerns a solvent-free, polymerizing hotmelt substance free of, or low in monomers, for corrosion- and/or abrasion proofing and/or forming a protective film with barrier properties on a real substrates and molded bodies made of metal, plastic, cellulose materials and/or inorganic materials, in particular for wrapping purposes, and consisting of(a) one or more polymerizing polymers containing hydroxyls with an average molecular weight (M.sub.w) between 1,000 and 500,000 and with a glass transition temperature (T.sub.g).gtoreq.20.degree. C., and/or(b) one or more polymerizing, linear, unbranched and/or unbranched polyesters and/or their copolymers with an average molecular weight (M.sub.w) between 900 and 50,000 and with a glass transition temperature (T.sub.g).gtoreq.-50.degree. C.

Abstract: A thickened, uncrosslinked molding composition which has a long shelf life and can be cured above 50.degree. C. comprises a liquid reactive system, a thickener, a polymerization initiator and conventional additives. The thickener is a combination of a primary aromatic amine and an isocyanate. The molding compositions, which are, in particular, SMCs or BMCs, can be processed into moldings by compression molding, injection molding or transfer molding and subsequent curing.

Abstract: A process for producing a grafted alkyd resin, which comprises graft-copolymerizing an alkyd resin with 0.01 to 5.0% by weight of at least one vinyl monomer selected from the group consisting of nitrogen-containing vinyl monomers and phosphorus-containing vinyl monomers.

Abstract: A process for producing a grafted alkyd resin, which comprises graft-copolymerizing an alkyd resin with 0.01 to 5.0% by weight of at least one vinyl monomer selected from the group consisting of nitrogen-containing vinyl monomers and phosphorus-containing vinyl monomers.

Abstract: Coating composition containing hydroxy functional polyester graft copolymers are provided. The copolymer is crosslinkable by hydroxy-reactive crosslinking agent and, in particular, is suitable for use in thermosetting coating compositions adapted to form a flexible cured coating over a variety of substrates, such as metal and plastic. The copolymer has a number average molecular weight between about 1,300 and about 15,000, has a hydroxy number between about 30 and about 300, and is the reaction product of carbon-carbon double bond-reactive monoethylenically unsaturated monomer with hydroxy functional carbon-carbon double bond-bearing branched polyester macromonomer. The macromonomer is the reaction product of (i) isocyanato monomer having the formula: ##STR1## with (ii) hydroxy functional polyester reactant containing 0-1- urethane linkages per molecule.

Abstract: A thickened moulding composition comprises fibrous reinforcement, an ethylenically unsaturated polymer, a monomer copolymerizable therewith and a crystalline unsaturated polyester having a glycol component derived from at least two symmetrical glycols.Preferably, the crysatlline polyester has a molecular weight per double bond of no more than about 210 and a melting point of from 50.degree.-115.degree. C.

Abstract: A silicon-urethane (meth) acrylate which is a reaction product of an isocyanato-alkylsilane compound represented by the following general formula: ##STR1## wherein R.sub.1 represents an alkylene group having 2 to 5 carbon atoms, R.sub.2 represents an alkyl group having 1 to 5 carbon atoms or alkoxy group having 1 to 5 carbon atoms, and R.sub.3 and R.sub.4 each represents an alkyl group having 1 to 5 carbon atoms, and a hydroxyl group-containing ester of (meth) acrylic acid, a resin composition and a coating material for optical glass fiber comprising said silicon-urethane (meth) acrylate.

Abstract: A composite having a flexural modulus greater than 100,000 psi and excellent heat and damage resistance, consisting essentially of 5-45 weight percent of a vinyl thermoset copolymer and 55-95 weight percent of a polyurea (wherein the reaction product of the isocyanate and diamine chain extender constitutes 50-75 per cent by weight of the polyurea) is prepared by reacting, a mixture comprising:(a) an ethylenically unsaturated component containing at least one ethylenically unsaturated monomer optionally therewith, one or more ethylenically unsaturated high molecular weight compounds;(b) a polyoxyalkylene polyamine;(c) a diamine chain extender;(d) an aromatic polyisocyanate; and(e) a curing agent by the reaction injection molding technique. In particular Component B comprising constituents (a), (b) and (c) is combined with Component A comprising constitutents (d) and (e). Component A may further contain the monomer of constituent (a).