Abstract: Aqueous dispersions containA) from 96.95 to 45% by weight of a polyurethane,B) from 3.0 to 50% by weight of a phenol/formaldehyde condensation resin or of an epoxy resin andC) from 0.05 to 5.0% by weight of an inorganic salt having a solubility of less than 1 g/l in water at 20.degree. C.,the percentages by weight being based on the sum of the components A), B) and C).

Abstract: Polyurethane foams of excellent properties are produced by reacting a) one or more polyether polyols, b) a polymethylene poly(phenyl isocyanate) having a methylene-bis(phenyl isocyanate) content of from 70 to 77% by weight, c) melamine, d) a phosphorous containing compound and d) water as the blowing agent. The isocyanate must have a specific 4,4' to 2,4'-isomer ratio and the amounts of melamine and phosphorous must be within narrowly defined limits.

Abstract: An especially crack-resistant yet elastomeric and pliable polyurethane is provided as a polymer which is especially suitable for medical prosthesis, implants, roofing insulators and the like. The polymer is a polycarbonate urethane polymer which is substantially completely devoid of ether linkages.

Abstract: A urethane prepolymer useful for preparing paints, coating agents, adhesives, etc., is obtained by reacting a di-isocyanate with a tetra-functional polyol prepared by reacting erythritol with an alkylene oxide or lactone.

Abstract: This invention relates to a process for producing a moisture curable silyl-terminated polymer which comprises the steps of: (a) reacting a terminally-unsaturated monol (preferably a polyether or polyester monol) with a polyfunctional hydroxyl-reactive compound selected from the group consisting of polyisocyanates and organic polacyl compounds in a molar ratio of one mole of monol for each equivalent of functionality on said polyfunctional hydroxyl-reactive moiety, to provide a terminally-unsaturated polymer having terminal unsaturation at each end thereof; and (b) reacting said terminally-unsaturated polymer with a dialkoxyalkylsilane to form a dialkoxyalkylsilyl-terminated polymer capable of curing upon contact with moisture.

Abstract: A polyurethane adhesive is prepared from a reaction mixture containing small amounts of chain extender material and a high equivalent weight of a polyol and a monoalcohol. An article adhered to a substrate using this adhesive is firmly affixed to the substrate, yet can be removed without leaving residual adhesive on the substrate. In addition, this adhesive can be washed and reused if desired.

Abstract: The invention provides a polymer comprising a chain of detectable units joined together by linker arms.The detectable units may be, for example, antigenic or form part of a fluorescent or chemiluminescent or chromogenic or enzyme signal system.The polymer may find an application in the assay of an analyte which is a member of a specific binding pair.The invention also provides a labelled reagent in which the reagent is a member of a specific binding pair and the label is a polymer in accordance with the invention. The invention further provides an assay involving the use of a labelled reagent in accordance with the invention. Also the invention provides a kit for performing an assay, which kit includes a supply of a labelled reagent in accordance with the invention.

Abstract: This invention relates to a process for forming polyaniline films on a substrate and to composite articles formed by said process.

Abstract: The invention relates to heterofunctional diols of formula I and to polyurethane elastomers prepared therefrom.

Abstract: A plural liquid pack type resin composition useful for producing a shaped resin article having an enhanced heat resistance, mechanical strength and machinability, comprises a first resinous individual component (A) comprising a polyisocyanate compound and a second resinous individual component (B) comprising a mixture of a polyol compound with a polyepoxy compound and a curing agent, or an individual sub-component (i) comprising a mixture of a polyol compound and a polyepoxy compounds and another individual sub-component (ii) comprising a mixture of the polyol compound with a curing agent, in which composition the polyol compound is contained in an amount of 10 to 40 equivalents of the hydroxyl group, the polyepoxy compound is contained in an amount of 5 to 20 equivalents of the epoxy group, and the total equivalent amount of the hydroxyl group and the epoxy groups is 15 to 45 equivalents per 100 equivalents of the isocyanate groups of the polyisocyanate compounds.

Abstract: Processes for producing a polyurethane, a rigid polyurethane foam, a flexible polyurethane foam and a spray type rigid polyurethane foam are disclosed.In these processes, a specified tertiary aminoalcohol is used as a polyol component and a catalyst.

Abstract: A polyurethane elastomer exhibiting superior flex fatigue properties is obtained by reacting a mixture of isocyanate-terminated polyether prepolymers with at least one alkylthioaromatic amine curing agent. Optionally, the elastomer can be postcured for further improvement of its properties. The polyurethane elastomer can be utilized for the fabrication of a non-pneumatic tire.

Abstract: A polymer composite comprises about 5 to 95 parts by weight of a copolymer (A) selected from the group consisting of olefin/diene copolymer and ethylene/(meth)acrylic acid ester copolymer, and 5 to 95 parts by weight of a polyurethane resin (B), wherein the polyurethane resin is one which is synthesized in the melted copolymer in the absence of a compatibilizer, a composition for molding comprising such polymer composite and electroconductive fillers and its molded article, and rubber contacts. The polymer composite possesses the flexibility and durability equivalent to those of silicone rubber, has excellent injection molding property, can be made by a short manufacturing process, and can be manufactured inexpensively. The polymer composite of the invention, when used together with an electroconductive filler, is effectively applied as rubber contacts, that is, flexible electric connection members of electric products.

Abstract: Improved hydrophilic materials, such as foams and films, are provided. These material find use in a wide variety of fluid absorbent products, especially those relating to the absorption of bodily fluids. The soft, absorbent, and resilient foams of this invention exhibit greater wet and dry mechanical strength when compared with those known in the art, as well as improved fluid wicking capacity and lower density. These improved properties are believed attributable to the incorporation into the foams of at least one polyfunctional aliphatic amine.The provided hydrophilic materials comprise the polymeric reaction product of a mixture which comprises at least one epoxy resin, at least one amine-terminated poly(alkylene oxide), and at least one polyfunctional aliphatic amine. Methods for preparing foams and other hydrophilic materials are also provided.

Abstract: An aqueous reaction mixture of a multi-functional polydimethyl siloxane emulsified polymer, a methyl triethoxy silane, a mixture of substituted nonyl or octyl phenol derivative surfactants and synthetic ethoxylated amine surfactants, and ethanol. The reaction mixture is coated on a mold core surface and cured with heat to form a mold release surface that can be used in excess of twenty times prior to recoating.

Abstract: A binder resin comprises a vinyl copolymer, a mixture of vinyl copolymers, or a mixture of a vinyl copolymer and a vinyl polymer. A resin component with a molecular weight of not more than 10,000 is contained in an amount of from 5 to 50% by weight based on the whole resin. The vinyl copolymer or the mixture of vinyl copolymers has an acid anhydride group and a carboxyl group.

Abstract: A water- and solvent-free release agent for use in the production of articles of polyurethane foam contains one or more polyenes as the main constituent and also in addition if required a consistency adjuster, an antioxidant, accelerators and/or stabilizers. To apply water- and solvent-free release agents to the surfaces of polyurethane-foam moulding dies the misting or atomization of the release agent is effected with a device with an electrostatic charge, by which the release agent particles are given an electrostatic charge when passing through the exit nozzle.

Abstract: The invention relates to a sulfonated, thiol, and hydroxy-functional polyurethane polymer which comprises: (i) a polyurethane backbone; (ii) at least one SO.sub.3 M group pendant from the polyurethane backbone, wherein the polyurethane backbone has an SO.sub.3 M equivalent weight of from about 2,000 to about 100,000, and wherein M is selected from the group consisting of H.sup.+, NR.sub.4.sup.+ wherein R can be H.sup.+ or an alkyl group, Li.sup.+, Na.sup.+, K.sup.+, and mixtures thereof; (iii) at least two crosslinkable hydroxy groups pendant from the polyurethane backbone, wherein the polyurethane backbone has a hydroxy equivalent weight of from about 500 to about 50,000; and (iv) at least one --SD group pendant from the polyurethane backbone. The invention also relates to vinyl/polyurethane copolymers made therewith which are particularly useful as binders in magnetic recording media and a method of making the copolymers.

Abstract: A coating composition is described for producing a clear or colorless coating. The composition comprises:(a) a polymer comprising at least one functional group that is reactive with isocyanate,(b) a blocked polyisocyanate,(c) a hydrazide group, either attached to the polymer (a), to the polyisocyanate (b), or part of a compound different from (a) or (b), wherein at least one of the nitrogens of the hydrazide group is not adjacent to a carbonyl.

Abstract: Curable binders obtained by simultaneous reaction ofA) urethanes or ureas,B) acrylic or methacrylic compounds containing hydroxyl groups,C) paraformaldehyde andD) if appropriate, polyols,wherein, in the case where no polyol D) is also reacted, the reaction is carried out in the presence of an acid ion exchanger, and in the case where a polyol D) is also reacted, the reaction is carried out in the presence of an acid ion exchanger or a strong acid.These binders are suitable as coating compositions which can be cured by electron beams or by UV light.