Abstract: A dope for forming elastic polyurethane articles is prepared by using a polyol, a diisocyanate and a diamine. A solvent and a terminating agent comprising a secondary monoamine and a ketoimineamine and/or an aldoimine-amine may also be employed.

Abstract: A polysulphide resin composition is cured by reacting a liquid polysulphide resin with an isocyanate curing agent in the presence of an organometallic or metal salt catalyst, preferably an organotin catalyst such as dibutyltin laurate (DBTL). The compositions have utility in thin films and coatings, and in the bonding, sealing and coating of polycarbonates. Aliphatic isocyanates are preferred for applications where clear coatings are required, the more reactive aromatic isocyanates being preferred for other applications.

Abstract: Disclosed herein is a liquid isocyanate prepolymer having an isocyanate group content of from 10 to 30% by weight, prepared by reacting:i) a polyfunctional secondary amine group containing material of the general formula: ##STR1## wherein R represents alkyl, alkenyl, cycloalkyl, aralkyl or aryl radical:A represents an organic radical having a molecular weight between 28 and 6000 and having a functionality of m andm represents an integer from 2 to 6;withii) an isocyanate mixture comprising:a) from 50 to 100% by weight of diphenylmethane diisocyanate of which from 2 to 50% by weight consist of 2,2'- and 2,4'-isomers; andb) the balance being polyphenylpolymethylene polyisocyanates.

Abstract: A powder coating which is specifically useful for the containing of electric appliance, office appliance and the like and is excellent, inter alia, stain resistance of the formed coating is provided, the powder coating comprising (a) a base resin having a reactive functional group, (b) a hardener having in its molecule 2 or more functional groups which are reactive with the functional group of the base resin and (c) an acrylic resin containing 40 100 % by weight of the total of the constituting monomers of t-butyl acrylate and/or t-butyl methacrylate.

Abstract: A composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.

Abstract: Compositions and a method for preparing a molded foamed polymeric article comprising (1) a relatively high molecular weight polyahl and a relatively low molecular weight polyol, in proportions such that the relatively high molecular weight polyahl and the relatively low molecular weight polyol are incompatible, (2) a polyisocyanate, (3) a blowing agent, and (4) an internal mold release/compatibilizing agent containing (a) a metal salt of a weak acid, wherein the metal is selected from elements of the Periodic Table of the Elements having Atomic Numbers 3-5, 11-14, 19-34, 37-52, 55-57, and 72-84, and (b) a compound containing at least one amine group, wherein the internal mold release/compatibilizing agent is present in an amount sufficient to provide mold release characteristics to the article and to compatibilize the relatively high molecular weight polyahl and the relatively low molecular weight polyol, are disclosed. In a preferred embodiment the blowing agent is water.

Abstract: A method of imparting hydrophobic or abhesive properties to a substrate. A composition including a compound selected from the group consisting of(a) a compound of the formulaR.sub.1 R.sub.2 C.dbd.CR.sub.3 R.sub.4and an oligomer of polymer thereof;(b) a compound of the formula--(CR.sub.1 R.sub.2 --CR.sub.3 R.sub.4).sub.n --(c) a compound of the formula ##STR1## and an oligomer or polymer thereof wherein R.sub.1, R.sub.2 and R.sub.3 are independently CH.sub.3 or C.sub.2 H.sub.5 ; R.sub.4 is H, CH.sub.3 or C.sub.2 H.sub.5 ; A and B are independently H, CH.sub.3, C.sub.2 H.sub.5 or --(CR.sub.1 R.sub.2 --CR.sub.3 R.sub.4).sub.n --; and n is an integer between 1 and 20,000,000 is applied to the surface of the substrate. When the composition cures, the substrate possesses superior water-proof and release properties.

Abstract: A storage stable adhesive mixture of hexamethylenediamine carbamate and the reaction product of ethylene/propylene oxide polyol and a polyurethane prepolymer of diphenyl methane diisocyanate, polytetramethylene glycol, and optionally, 1,4-butanediol; and a process for using the adhesive to laminate fabric to polymeric membrane is also described.

Abstract: Thoughened thermoplastic compositions are described having a good balance of mechanical, thermal and process properties, comprising:at least a polyphenylene ether,at least a polyamide,an elastomeric copolymer containing a vinyl aromatic polymer grafted on an olefinic elastomer, andan organic diisocyanate.

Abstract: The invention relates to a thermosetting composition which comprises at least one blocked polyisocyanate of formula I or II ##STR1## wherein n is an integer .gtoreq.2,Q is an organic radical of valency n, andR.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8 are each independently of one another hydrogen, alkyl, aryl, arylalkyl, alkoxy, alkylthio or hydroxyl, anda primary or secondary polyamine which is liquid at room temperature and is suitable for crosslinking,which blocked polyisocyanate is essentially insoluble in the polyamine at ambient temperature or moderately elevated temperature.The novel compositions invention have a particularly high reactivity and good shelf stability. An important embodiment of the invention relates to those compositions in which the blocked isocyanate is essentially insoluble in the polyamine at the storage temperature. The novel compositions are especially suitable for bonding plastics materials and metals.

Abstract: A blowing agent emulsion comprising a blowing agent mixture, such that the mixture comprises (1) one or more low boiling, hydrochlorofluorocarbon, and/or one or more low boiling, hydrofluorocarbon and (2) one or more low boiling chlorine-free perfluorinated compound; a foamable polymerizable reaction mixture, and a fluorochemical surfactant, optionally, a silicone surfactant, and a catalyst; a foamed plastic; and a process for making thereof.

Abstract: Two component catalyst systems containing (1) a N,N',N"-tris(N,N-dialkylaminoalkyl)-s-triazine component, and (2) a monocarboxylic acid component wherein the monocarboxylic acid component is one or more monocarboxylic acids having 4 to about 18 carbons are useful for polymerizing di- or poly-isocyanates, and, optionally, epoxies. The catalyst systems can often be particularly useful for preparing polymer foams which have good heat resistivity and dimensional stability properties compared to conventionally formed foams. The ratio of the two components of the catalyst system, along with the amount of the catalyst system used to prepare a polymer formulation, can be adjusted such that the monocarboxylic acid component can react with isocyanate group containing compounds in the foam formulations to provide carbon dioxide to function as a sole blowing agent, or as a partial blowing agent used in conjunction with other conventional blowing agents.

Abstract: The present invention is directed to a novel internal release agent, a mixture of isocyanate reactive materials containing the release agent and a RIM process using the release agent. The novel release agent is the reaction product of i) an ester prepared by reacting a specific tetrol with a mixture of saturated and unsaturated acids, and ii) a neutralizing agent.

Abstract: Provided are a cyclodextrin polymer containing cyclodextrin in the backbone chain of a high-molecular weight compound selected from a polyurethane, a polyurea, an unsaturated polyester, a polyester, a polycarbonate, a polyamide and a polysulfone, as well as a cyclodextrin membrane prepared using said polymer.In accordance with the present invention, an increased amount of cyclodextrin unit can be immobilized and the function thereof is significantly improved; further, by using a specific high-molecular weight compound, the polymer obtained is rendered insoluble in water, etc. and yet decomposable with enzymes and it can accordingly be used as a degradable polymer. Further, there can be provided a cyclodextrin membrane which contains a large extent of cyclodextrin and which can be used alone as a membrane.

Abstract: Reactive systems consisting of organic polyisocyanates, organic polyepoxides, polymer modifiers, special catalysts and optionally other auxiliary agents and additives.

Abstract: The invention relates to a polyamide resin composition comprising(A) nylon 4.6,(B) an aliphatic polyamide having a CH.sub.2 /NHCO ratio of from 6 to 11 and(C) a non-crystalline polyamide having a glass transition temperature of at least 100.degree. C. The composition has a decreased water absorption while retaining high mechanical strength, heat stability and chemical resistance. Dimensional stability and mechanical properties after water absorption are unexpectedly good.

Abstract: At least some of the isocyanate groups in the cured polyurethane sealant of this invention have the isocyanurate structure. A moisture-curing sealant composition of the invention comprises an active isocyanato-terminated isocyanate prepolymer containing a polyol component with a molecular weight of 2,000 to 20,000 and an isocyanurating agent. The sealant composition of the present invention is particularly excellent in initial bond strength due to sharp viscosity buildup.

Abstract: The invention relates to crosslinking isocyanates for polymeric adhesives containing a mixture of triisocyanatotriphenyl methane and trimerization products of 2,4-tolylene diisocyanate containing at least 50% triisocyanatomonoisocyanurate and less than 1% free tolylene diisocyanate.

Abstract: A water-vapor permeable, waterproof coated fabric having a fibrous base fabric, and a porous film coated on one side of the base fabric. The porous film comprises a synthetic polymer composed mainly of a polyurethane resin and inorganic fine particles having a mean particle diameter of not more than 0.1 .mu.m. In the porous film, microcells intercommunicate in the thicknesswise direction of the film to form a honeycomb skin core structure having a diameter of 1 to 20 .mu.m. The porous film has a multiplicity of micropores having a diameter of not more than 1 .mu.m. The coated fabric has waterproof and water-vapor permeability characteristics sufficient to meet such performance characteristics required in various applications, such as rainwears, military garments, and sportswears.

Abstract: A high solids, chip resistant, sprayable polyurethane coating composition comprising the reaction mixture of a ketoxime-blocked polyisocyanate and a cyclohexanedicarboxylic acid-based polyester polyol, is disclosed. The composition is characterized by its relatively low viscosity and the resulting coating is characterized by its low volatile organic content.