Abstract: The invention concerns polymers of formula (1) wherein: R1 represents an alkyl cycloalkyl or aromatic radical capable of bearing one or several hydroxyl functions. They can be obtained by reacting a copolymer bearing an epoxy function on a side-chain with a product of formula R1-COOH.

Abstract: The present invention relates to fire-retarded compositions comprising, by weight, the total being 100 parts:

Abstract: Polyurethane formulations based on hydroxylated polybutadiene are catalyzed by an N-substituted imidazole derivative. This type of catalysis advantageously replaces the conventional catalysts based on mercury salt. The catalysis does not pose an environmental problem and allows a particular increase in viscosity, permitting an extended pot life and rapid setting.

Abstract: The invention relates to a process for preparing aqueous polyurethane dispersions, which comprises the following steps:

Abstract: The invention relates to compositions containing a polyamide matrix (A) and a polyolefin dispersed phase (B), in which compositions the polyamide has a melting point below that of PA-6 and the dispersed phase consists of at least one polyolefin (B) chosen from functionalized polyolefins (B1) and non-functionalized polyolefins (B2). Advantageously, (A) is PA-6/12 or PA-6/6,6. These compositions are useful for making monolayer or multilayer films by extrusion with EVA or PE.

Abstract: Compositions, which are stable on storage, which make it possible to obtain elastomer coatings. The compositions are obtained from a hydroxylated urethane prepolymer and from a mixture of acrylate monomer and oligomers, capable of giving an elastomer by thermal or photochemical radical polymerization; the urethane prepolymer being obtained by condensation of a conjugated diene oligomer comprising hydroxylated endings, optionally mixed with a chain extender, with a polyisocyanate compound. These compositions can be used in the protection of electrical and/or electronic components and generally as coatings for metal surfaces or for plastic surfaces.

Abstract: The invention relates to a coated metal surface including, successive, at least one layer of polyurethane and at least one layer of thermoplastic polymer, it being possible for a binder to be placed between the polyurethane and the thermoplastic polymer. The invention is useful for covering pipers, electrical cables, telecommunication cables and stay wires.

Abstract: The invention relates to hot-melt adhesive (HMA) compositions which are provided in the form of a polymer containing free isocyanate functional groups, the said polymer resulting from the reaction of a polyisocyanate (A), of a polydienopolyol (B) and of a copolymer (C) of ethylene containing hydroxyl functional groups. They have a low viscosity and can thus be employed from 110° C. They can be crosslinked with atmospheric moisture.

Abstract: The invention relates to fibers coated with a hydrophobic material based on an epoxidized polydiene oligomer. This coating results from the photopolymerization of a composition comprising at least one expoxidized polydiene oligomer, at least one photoinitiator salt and optionally a reactive diluent. The invention relates in particular to optical fibers.

Abstract: The invention relates to a coated metal surface including successively, starting at the metal, at least one layer of polyurethane and at least one layer of thermoplastic polymer, it being possible for a binder to be placed between the polyurethane and the thermoplastic polymer.It is useful for covering pipes, electrical cables, telecommunication cables and stay wires.

Abstract: The invention relates to a polyol-based plasticized composition which includes a sufficient quantity of a thickening additive to obtain a viscosity at 20.degree. C. of at least 4 Pa.cndot.s. This plasticized composition can be employed for obtaining a polyurethane gel.