Abstract: The present invention is a process for hydrophobically modified emulsion polymers, polymers obtained thereby, waterborne coating compositions containing the polymers and a coated substrate coated with the coating composition. The emulsion polymer is formed by first combining hydrophobic polymeric compound and .alpha.,.beta.-ethylenically unsaturated monomer, and surfactant to form a mixture and subjecting the mixture to high stress techniques to form stabilized particles of the hydrophobic polymer and monomers, in the aqueous phase, said particles having a particle size between 50 and 500 nm. The polymerizable material within the particles is polymerized to form a hydrophobically modified core polymer. Additional monomers including at least one .alpha.,.beta.-ethylenically unsaturated hydrophilic monomer are then added to the core polymer and polymerized by emulsion polymerization, to form a hydrophobically modified core-shell emulsion polymer.

Abstract: Instant invention provides thermoplastic polyurethane compositions comprising one or more thermoplastic polyurethanes A) one or more acrylate based rubbers B), and one or more UV and/or heat stabilizers C), wherein the thermoplastic polyurethane composition of A)+B)+C) has a greater UV stability as compared to a thermoplastic polyurethane composition of A)+C), wherein (a.) UV stability is measured as the difference between (1.) Delta E versus white tile after molded, and (2.) Delta E versus white tile after 1000 hours of QUV (b.) increasing stability is indicated by minimization of the difference between (1.) and (2.).The invention further provides a process of making molded thermoplastic polyurethane articles using the aforementioned thermoplastic polyurethane compositions.

Abstract: A low organic emission composition comprising a di-alkoxylated bisphenol-A dimaleate urethane dimethacrylate hybrid resin, an alkoxylated bisphenol-A diacrylate or dimethacrylate, ethylene glycol dimethacrylate and other vinyl monomers. The composition is useful in such applications as a substitute for prior art resins, such as polyester/vinyl ester based resins, typically used in fiberglass reinforced plastic applications.

Abstract: The invention relates to nonaqueous paints which comprise(A) a hydroxyl group-containing synthetic resin or a mixture of hydroxyl group-containing synthetic resins(B) an amino resin or a mixture of amino resins(C) a blocked polyisocyanate or a mixture of blocked polyisocyanates, and(D) a pigment or a mixture of pigments, and are characterized in that component (C) contains both isocyanate groups blocked with a blocking agent (I) and isocyanate groups blocked with a blocking agent (II), in which contextthe blocking agent (I) is a dialkyl malonate or a mixture of dialkyl malonates,the blocking agent (II) is a blocking agent which is different from (I) and contains active methylene groups, or is an oxime, or is a mixture of these blocking agents, andthe ratio of equivalents between the isocyanate groups blocked with (I) and the isocyanate groups blocked with (II) is between 1.0:1.0 and 9.0:1.0.

Abstract: An allophanate-modified urethane resin is formed by reacting an allophanate-modified isocyanurate with one or more hydroxy-functional olefinic compounds, such as hydroxy-functional acrylates, methacrylates, allyl ethers, or vinyl ethers. Such resins typically have relatively low viscosities and can be used to make coating compositions for surfaces such as wood, cement, vinyl, plastic, metal, and glass on such diverse products as flooring, vinyl tiles and sheets, fiber optics, and plastic. Such coating compositions are typically curable by thermal processes or by high-energy irradiation, including UV/visible light or electron beam irradiation.

Abstract: A friction sound-preventing surface-treating agent is composed of an acryl-vinyl chloride based paint resin, and 2-60 wt % of spherical and/or non-spherical polyurethane particles having an average particle diameter of 1-50 .mu.m as a solid component relative to said acryl-vinyl chloride based paint resin.

Abstract: Water-based primer composition made up of (A) a water-compatibilised modified polyolefin type resin, which is a modified polyolefin resin modified with an .alpha.,.beta.-unsaturated carboxylic acid, of a saponification value of 10-60 mg KOH/g, a number average molecular mass of 4000-30,000 and a degree of chlorination of 0-30 wt %, water-compatibilised by means of an amine compound, and if necessary additionally by a surfactant, (B) a water-compatibilised acrylic resin of a glass transition temperature of -50.degree. to 20.degree. C., and (C) a water-compatibilised polyurethane resin of a break elongation of 200-600%, and if necessary an additional curing agent, in which the contents of the different components are (A) 25-70 wt %, the sum of (B) and (C) 30-75 wt %, and the ratio by weight of (B)/(C) 100/0-50/50.

Abstract: A two-part laminating adhesive is provided which joins two sheets of polymeric material, which adhesive, in cured form, provides substantially no contribution to the oxygen barrier properties of the laminate. The first part is a mixture of a polyol A), preferably a polyether, and a polymer B) formed from polymerization of .alpha.,.beta.-ethylenically unsaturated monomers, polymer B) preferably being formed in situ from monomers dissolved in polyol A). The second part is a multi-functional isocyanate, preferably an isocyanate-terminated urethane formed by reacting a poly-isocyanate monomer with a polyol.

Abstract: The present invention relates to a process for the production of textured coatings on plastics surfaces using coating compositions based on hydroxyl group-containing binders and polyisocyanates, and using pulverulent texturing agents.

Abstract: The invention provides novel macromonomer and carboxyl functional polyurethanes having a high carboxyl content. The invention further provides dispersions, coatings and magnetic recording media comprising these polyurethanes, or blends or copolymers of these polyurethanes with quaternary ammonium compounds. The invention further provides novel dispersions, coatings and magnetic recording media comprising combinations of carboxyl functional polyurethanes having a high carboxyl content with quaternary ammonium polymers.

Abstract: An aqueous two-component polyisocyanate coating composition is based on an essentially isocyanate-free emulsifier that comprises the reaction product of:(i) an isocyanate and(ii) a member selected from the group consisting of: hydroxy functional polyalkyl ethers containing at least five ethylene oxide, alcohols different from said polyalkyl ethers, amine compounds, and combinations thereof. The hydroxy functional polyalkyl ether is provided in a quantity sufficient to react at least one equivalent of isocyanate groups in polyisocyanate (i), and the total amounts of reactants (ii) are sufficient to react all of the isocyanate groups of the polyisocyanate (i).

Abstract: The present invention provides a cationic electrodepositable coating composition comprising:?I! a polyurethane-modified epoxy resin-amine adduct obtained by a reaction of:(A) a polyurethane compound having one terminal isocyanate group in the molecule, obtained by a reaction of (a) a polyhydroxy compound having a number-average molecular weight of 50-8,000, (b) a polyisocyanate compound, and (c) a compound having one active hydrogen atom in the molecule,(B) a bisphenol type epoxy resin having at least two epoxy groups in the molecule, and(C) an active-hydrogen-containing amine compound, and ?II! a nonionic film-forming resin.

Abstract: Aqueous dispersions of urethane polymers and vinyl polymers (e.g., acrylics) are disclosed that provide water-based coating compositions with good adhesion following humidity exposure. The dispersion is predominately urethane, and the polyurethane is made from a first and a second polyisocyanate, the first polyisocyanate having at least one open carbon chain greater than six carbon atoms in length between two isocyanate groups, preferably at least eight carbon atoms in length. The vinyl monomers are polymerized in the presence of the aqueously dispersed polyurethane.

Abstract: The subject of the present invention is a composition comprising at least one masked or unmasked polyisocyanate in the form of an aqueous emulsion and at least one polyhydroxylated polymer, advantageously a polyol, in the form of a second aqueous dispersion. This composition is further defined in that the polyol content, expressed in mass per cent, is at least equal to 35-0.75 R and the polyol content, expressed in mass per cent, does not exceed 45-2 R with R equal to the ratio of the mean size (d.sub.50) of the emulsion to that of the polyol dispersion.

Abstract: A method of in-mold coating using a coating composition including:(A) a vehicle component including (i) a urethane acrylate oligomer or a urethane methacrylate oligomer, which is a reaction product containing no substantial unreacted isocyanate groups, of (a) an organic polyisocyanate, (b) an organic polyol and (c) a hydroxyalkyl acrylate or a hydroxyalkyl methacrylate, and (ii) a polymerizable unsaturated monomer,(B) a polyisocyanate compound, and(C) a polymerization initiator.

Abstract: A hemocompatible surface-modifying additive is provided for modifying polyurethane or polyurethane urea substrates. The additive has a polyurethane or polyurethane urea hard block or an alternative block which is miscible with the poly(urethane) or poly(urethane-urea) base polymer, a polysiloxane hydrophobic soft block, an optional hydrophilic spacer and a peptide selected from the group consisting of Arg-Gly-Asp, X-Arg-Gly-Asp, Arg-Gly-Asp-X and X-Arg-Gly-Asp-X', wherein X and X' are amino acids.

Abstract: A two part polyurethane adhesive system and method of using the adhesive to bond polyurethane foams, polystyrene foams, and other substrates. The first part of the adhesive system is a hydrophilic polyurethane prepolymer prepared by reacting a high molecular weight, multi-functional polyol which has been copolymerized randomly from propylene oxide and ethylene oxide, with a diisocyanate or polyisocyanate. This reaction mixture is then diluted with either a flame retardant, a plasticizer, a solvent which is not considered a volatile organic compound, or a combination of these chemicals. The second part of the adhesive system is an aqueous phase curing agent. In addition to water, the components of the aqueous phase may include a tackifying agent or a catalyst or both.

Abstract: Floor coverings include a wear layer made from a coat composition including a multifunctional polyurethane (meth)acrylate oligomer. The multifunctional polyurethane is made by reacting a polyisocyanate with a functionality equal or higher than 3, a polyester polyol, and a hydroxyalkyl-(meth)acrylate with a number average molecular weight of about 344 to about 472. The coating composition preferably includes a reactive (meth)acrylate diluent and a photoinitiator.

Abstract: The present invention relates to coating compositions including a particular class of oligomeric sterically hindered polyamines as replacements for traditional blocked and unblocked polyamine crosslinkers. The use of these oligomeric sterically hindered polyamine crosslinkers resultss in a desirable pot life/cure speed relationship not generally available with traditional unblocked polyamine crosslinkers, as well as a lower VOC and often better appearance characteristics than generally available with the traditional blocked varieties.

Abstract: Provided is an optical fiber having a primary coating thereon wherein the coating is formulated from an ultra-violet light curable resin composition containing:(A) a polyether polyol compound containing, as structural units, groups represented by the following formulas (1), (2, and (3),(1) --CH.sub.2 CH.sub.2 O--(2) --CH.sub.2 CH(R)O--, and(3) one or more groups selected from groups (a), (b), and (c) below, ##STR1## wherein R represents an alkyl group containing two or more carbon atoms, and R.sup.1 and R.sup.2 are independently selected from a hydrogen atom or a methyl group;(B) a polyisocyanate compound; and(C) a (meth)acrylate compound having a hydroxy group.

Abstract: A process for the preparation of water-dilutable polyvinylbutyral dispersions by (1) reacting an aliphatic acid having from one to three isocyanate-reactive groups and from one to three acid groups, or a mixture of such acids, with one or more polyfunctional isocyanates whose average functionality is at least two, where the quantity of the isocyanate component is chosen such that the ratio of the number of isocyanate groups to the number of isocyanate-reactive groups of the acid component is between 2.2:1 and 1.7:1; (2) then reacting from 25 to 75% of the remaining isocyanate groups with at least one monofunctional compound selected from monoalcohols and monoamines; and (3) reacting this NCO-functional emulsifier resin further with polyvinylbutyral and, if desired, with an appropriate plasticizer resin using a suitable auxiliary solvent. The polyvinylbutyral dispersions prepared in this way can be used as binders and binder components for coatings with good adhesion.

Abstract: An electrophotographic developer roller is made by casting urethane prepolymer mixed with a butadiene, a trifunctional curative and ferric chloride powder. After curing, the roller is baked, which oxidizes the outer surface. The oxidized surface layer is electrically resistive, which is desirable in a developer roller. An excellent developer roller is achieved at low production cost.

Abstract: A one-component aqueous coating system comprising (A) a hydrophilic polyacrylate polyol or polyesterpolyol containing at least one hydroxyl group, (B) a polyisocyanate which is water resistant at room temperature or a blocked polyisocyanate, (C) optionally a pigment or a conventional paint auxiliary, such as an antifoam, a levelling agent, a catalyst or a thixotropic agent, and a further reactive additive component (D), in a quantity of from 2 to 20% by weight, based on the overall solids content of (A), (B) and (D), the additive component (D) being characterized in that it contains at least one reactive OH, NH, NH.sub.2 or SH group and has a functionality of at least 1.5 to 3.0 relative to the crosslinking agent (B), a solubility in water of below 2% by weight and a molecular weight of 500-2000 g/mol.

Abstract: Sulfonated polyester polyols and mixtures of sulfonated polyester polyols and hydroxy carboxylic acids are used to prepare improved aqueous anionic poly(urethane/urea) dispersions with a high crystallization rate, low heat activation temperature, high green strength, stability at low pH, which show good compatibility with other water based polymers and with crosslinkers. The aqueous anionic poly(urethane/urea) dispersions have high heat resistance after curing or blending with a crosslinker.

Abstract: An extruder screw having a plurality of plasticating sections sufficient for plasticating polymeric materials of different bulk density.

Abstract: Polyoxymethylene with improved acid stability, process for production and use thereof. By adding 0.01 to 5 parts of an alkali metal salt of a polybasic acid, for example oxalic acid, citric acid and/or 0.01 to 5 parts of a polyalkylene glycol, for example polyethylene glycol and/or 0.1 to 100 parts of a thermoplastic polyurethane, each related to 100 parts of a polyoxymethylene, this polymer is stabilized against attack by acids, wherein in particular the combination of an alkali metal salt, in particular an oxalate, with small proportions of a thermoplastic polyurethane is advantageous. The proportion of thermoplastic polyurethane may be reduced when the thermoplastic polyurethane has a Shore A hardness of 70 to 96. The weight loss of a stabilized POM under the action of acid may be less than 3% of that of an unstabilized POM. The products are useful when exposed to acidic agents such as irrigation systems, dishwashers, sanitary installations.

Abstract: Polyurethane dispersions prepared by polymerization, initiated by free radicals, of polyurethane macromonomers containing carboxyl, phosphonic acid or sulfonic acid groups and lateral vinyl groups and optionally terminal vinyl, hydroxyl, urethane, thiourethane and/or urea groups.These polyurethane dispersions are suitable for the production of coatings on substrates, as adhesives or as binders in printing inks.

Abstract: The present invention relates to a process for preparing aqueous binders for aqueous coating compositions by reacting a mixture ofA) 9.9 to 85 wt. % of a hydroxy- and acid-functional poly(meth)acrylate andB) 14.9 to 90 wt. % of a hydroxy-functional, fatty acid-modified polyester withC) 0.1 to 20 wt. % of a diisocyanate having a molecular weight of 140 to 318,to form urethane groups and then dissolving or dispersing the reaction product in water with prior or simultaneous neutralization of at least a portion of the carboxyl groups present, wherein the sum of the percentages of A) to C) add up to 100.

Abstract: Polyurethane/urea elastomers having an isocyanate equivalent index below 100, preferably from about 15 to about 80; containing an effective amount of polyisocyanate component, and an effective amount of an isocyanate reactive component comprising at least one polyamine and at least one polyol, wherein said elastomer contains from about 1 to about 199 equivalent percent amine per isocyanate equivalent.

Abstract: A coating composition containing film forming binder and a volatile liquid carrier for the binder; wherein the binder containsa. an acrylic polymer of polymerized monomers selected from the group consisting of an alkyl methacrylate, an alkyl acrylate, each having 1-12 carbon atoms in the alkyl group, isobornyl methacrylate, isobornyl acrylate, hydroxy alkyl methacrylate, hydroxy alkyl acrylate each having 1-4 carbon atoms in the alkyl group, styrene and any mixtures thereof;b. an acrylosilane polymer of polymerized monomers selected from the group consisting of an alkyl methacrylate, an alkyl acrylate, each having 1-12 carbon atoms in the alkyl group, isobornyl methacrylate, isobornyl acrylate, hydroxy alkyl methacrylate, hydroxy alkyl acrylate each having 1-4 carbon atoms in the alkyl group, styrene and any mixtures thereof and an ethylenically unsaturated hydroxy functional acrylosilane monomer; andc.

Abstract: The present invention relates to polyester acrylate/urethane dispersions based on polyester acrylate prepolymers containing hydroxyl groups, obtainable by polyaddition ofA. 40-90 wt. % of one or more polyester acrylate prepolymers containing hydroxyl groups and having an OH content of 40-120 mg of KOH/g andB. 0.1-20 wt. % of one or more mono- and/or difunctional compounds reactive towards isocyanate groups, which compounds contain groups which are cationic, artionic and/or have a dispersant action due to ether groups withC. 10-50 wt. % of one or more polyisocyanatesD. 0.0-30 wt. % of polyolstogether with a subsequent reaction withE. 0.1-10 wt. % of one or more di- and/or polyamines.

Abstract: Compositions having good low temperature impact performance made from a thermoplastic (e.g., a polyolefin such as polypropylene) and either at least one linear ethylene/C.sub.5 -C.sub.20 .alpha.-olefin or at least one substantially linear ethylene/C.sub.3 -C.sub.20 .alpha.-olefin polymer are disclosed. The compositions are easily molded and have particular utility in making automotive facia, parts and other household articles.

Abstract: A radiation-curable prepolymer of a polyurethane endtipped with an hydroxy (acrylate or methacrylate) is disclosed. The polyurethane is derived from the reaction of a polyfunctional isocyanate with a hydrolyzable oligomer of an anhydrous cyclic ester of an hydroxy acid. Crosslinked polymers prepared by irradiating the prepolymers are also disclosed. The crosslinked polymers are bioabsorbable and biocompatible with bodily tissue, yet still maintain the outstanding mechanical properties one would expect from a polyurethane. The prepolymers and crosslinked polymers are especially well-suited for the fabrication of surgical devices, particularly wound closure devices such as surgical staples and clips, in a stereolithography apparatus.

Abstract: This invention provides compositions for treating fibrous substrates to render those substrates durably repellent to water and oil and durably resistant to dry soil comprising a fluorochemical polymer formed by: (a) reacting a tri- or higher order isocyanate with a fluorochemical alcohol; (b) reacting the resulting product with an amount of water sufficient to react with between 5 and 50% of the isocyanate groups present in the product compound; and (c) thereafter reacting the product with a difunctional poly(oxyalkylene)-containing material.

Abstract: Coating compositions containing an alkyd, urethane or unsaturated polyester resin and an ester of an unsaturated alcohol and fluorinated acid wherein the cured coating has an advancing hexadecane contact angle of at least about 40 degrees and improved oil and water repellency is disclosed.

Abstract: Thermoplastic elastomers (TPEs) containing side chain crystalline (SCC) blocks. The SCC blocks my be hard (A) blocks or the soft (B) blocks (or both) in the TPE. Some of these TPEs are novel, e.g. those in which A blocks are SCC blocks, and the B blocks are polyethers, polyacrylates, polyamides, polyurethanes or polysiloxanes. The SCC-containing TPEs are particularly useful as matrix materials for other components which are dispersed therein, e.g. energetic solids and other thermally responsive materials.

Abstract: A one-part, solvent free in-mold coating composition exhibiting good hardness, good crack resistance, and good adhesion to fiber reinforced plastic substrates includes a blend of a urethane polyacrylate compound having three or more (meth)acrylate groups, a urethane diacrylate or urethane divinyl compound, one or more adhesion promoters, and one or more ethylenically unsaturated copolymerizable monomers.

Abstract: An aqueous dispersion containing urethane vinyl composite resin which exhibits superior dispersability properties. The composite resin is obtained by graft polymerizing vinyl monomers with dispersable polyurethane. The polyurethane exhibits an acid value of at least 20. The dispersable polyurethane is obtained by reacting a urethane prepolymer having isocyanate groups at its end with a polyol compound obtained by the semi-esterification of polycarboxylic acid with benzene rings or its anhydride with trimethylol ethane or trimethylol propane. The urethane prepolymer is produced by reacting polyol compounds with poly-isocyanate compounds and ranges in molecular weight of from about 800 to 3000.

Abstract: Disclosed are aqueous, single-component coating compositions that contain as the primary binder component a polyurea which is the reaction product of:(a) a polymeric component containing at least one polymer based on olefinically unsaturated compounds and containing isocyanate-reactive groups comprising primary amino groups and/or secondary amino groups, with the optional additional presence of hydroxyl groups; and(b) a polyisocyanate component containing polyisocyanate groups in amounts sufficient to provide an NCO/NH equivalent ratio of about 0.5:1 to 1:1.

Abstract: A water-based vacuum forming laminating adhesive includes an ionic water-dispersed polyurethane, a carbodiimide and/or an aziridine, and optionally a vinyl acetate polymer. The polyurethane is characterized by a high polydispersity index, which provides a combination of adhesion and thermal stability. The polyurethane is made by chain extending an isocyanate functional urethane prepolymer with polyamine and ketimine.

Abstract: Graft copolymers obtained by(A) polymerizing 10 to 89 wt % of a mixture consisting essentially of either(a1) from 70 to 99.89 wt % of a C.sub.1 -C.sub.18 -alkyl ester of acrylic acid,(a2) from 0.1 to 10 wt % of a polyfunctional monomer,(a3) from 0 to 29.89 wt % of an ethylenically unsaturated monomer which differs from (a1) and (a2), is copolymerizable therewith and carries no acid group and(a4) from 0.01 to 10 wt % of a copolymerizable monomer containing at least one acid groupor(a5) from 49.99 to 99.99 wt % of at least one diene,(a6) from 0 to 50 wt % of a monomer which is copolymerizable therewith and carries no acid group and(a7) from 0.01 to 10 wt % of a copolymerizable monomer containing at least one acid groupin the presence of from 1 to 80 wt % of a cross-linked silicone rubber to form a copolymer A,and(B) polymerizing 10 to 89 wt % of a mixture consisting essentially of(b1) from 50 to 99.99 wt % of a styrene compound of the formula (I) ##STR1## where R.sup.1 and R.sup.

Abstract: Binder systems suitable for electrodeposition coating and based on basic, thermally crosslinkable epoxy or polyurethane resins as binders (B), containing from 0.001 to 1% by weight of a polymer (I) whose predominant components are ethyl acrylate and/or n-propyl acrylate, based on the overall solids content of the binder system.

Abstract: A process for preparing poly(urethane/urea) prepolymers and aqueous poly(urethane/urea) dispersions (PUDs) therefrom, the poly(urethane/urea) polymers having high heat resistance and good water resistance. The method employs a water soluble volatile organic solvent, such as acetone, at a level of 0.1-5%, based on final dispersion weight, a level which does not require removal for purposes of flash point considerations.

Abstract: Perfluoroalkenoate esters containing at least two double bonds and coasting compositions, having durable advancing and receding hexadecane contact angles, containing such esters with alkyd or urethane resins are provided.

Abstract: A process for the functionalisation of polymers is disclosed. Functionalisation takes place by reacting a polymer with a peroxidant, preferably, the peroxydisulphate or monosulphate or sodium or potassium in an aqueous medium. The hydroxylated polymer can then be reacted with other materials, including biomolecules. Using the method of the inventon, products eg. Catheters or oxygenators can be produced with improved properties hitherto unobtainable.

Abstract: A process for foaming polyurethane reactive hot melt adhesive comprising the steps of:a) melting a reactive polyurethane adhesive containing 0.05 to 0.5% by weight of a 2,2'dimorpholinodiethyl ether or di(2,6-dimethylmorpholinodiethyl)ether catalyst in a heated reservoirb) pumping the adhesive from the heated into a heated reservoir recirculating foaming device;c) foaming the adhesive by injecting therein an effective amount of an anhydrous gas;d) discharging a portion of the foamed adhesive through an orifice onto a substrate to be bonded; ande) recirculating the remaining foamed adhesive back to the foaming device for discharge at a later time.

Abstract: Disclosed are aqueous, single-package or two-package coating compositions having pH above 7.0 that contain as the binder a polyurea which is the product of a polyisocyanate and an anionic amino polymer synthesized in water from olefinically unsaturated monomers including primary or secondary amine containing monomers, the monomers being substantially free of acid groups. The polymerization of the amino polymer is carried out in the presence of an azo initiator dispersed in water by neutralization of acid groups present on the initiator.

Abstract: Aqueous dispersion adhesives of anionic polyurethanes which have high heat resistance and low activation temperature, even when employed without addition of a crosslinker. The polyurethane is the reaction product of an isocyanate terminated polyurethane prepolymer, and water. The polyurethane prepolymer is the reaction product of a polyol component and a diisocyanate component, the polyol component including:a sulfonated polyester polyol,a hydroxy carboxylic acid of the formula:(HO).sub.x R(COOH).sub.ywherein (R) represents a straight or branched, hydrocarbon radical containing 1 to 12 carbon atoms, and x and y represent values from 1 to 3, and optionally,a low molecular weight aliphatic diol having a molecular weight of from 60 to 400a non-sulfonated polyol,and the diisocyanate component being selected from the group consisting of aromatic diisocyanates, isopherone diisocyanate, hexamethylene diisocyanate and mixtures thereof.

Abstract: Aqueous dispersion adhesives of anionic polyurethanes which have high heat resistance and low activation temperature, even when employed without addition of a crosslinker. The polyurethane is the reaction product of an isocyanate terminated polyurethane prepolymer, and a chain extender. The polyurethane prepolymer is the reaction product of a polyol component and a diisocyanate component, the polyol component including:a sulfonated polyester polyol,a hydroxy carboxylic acid of the formula:(HO).sub.x R(COOH).sub.ywherein (R) represents a straight or branched, hydrocarbon radical containing 1 to 12 carbon atoms, and x and y represent values from 1 to 3, anda low molecular weight aliphatic diol having a molecular weight of from 60 to 400.

Abstract: A heat resistant composition comprising a mixture of (a) a polyurethane or a modified polyurethane and (b) a bismaleimide oligomer, in which the bismaleimide oligomer is in an amount of about 1 to 35 percent by weight based on overall solid contents. The polyurethane is formed by reacting a diisocyanate-containing compound with a dihydroxy diol-compound. Then the polyurethane is reacted with a trimellitic anhydride, a diacid or a mixture thereof to form the modified polyurethane. The bismaleimide oligomer is formed by reacting a bismaleimide resin with a barbituric acid or a derivative thereof.