Patent ID: 6387976
Filing Date: 2002-05-14
Classification: C08F,C08G,C08L,C09D

Abstract:
A composition consisting essentially of a urethane prepolymer which is stable on storage and which gives an elastomer by thermal or photochemical radical crosslinking, having a content including the following constituents expressed in terms of parts by weight relative to the total parts by weight of the following constituents:100 parts by weight of the urethane prepolymer obtained by condensation of a diene oligomer having hydroxyl endings, optionally mixed with a chain extender, with a polyisocyanate compound in a ratio by weight such that the ratio of the molar concentration of the isocyanate groups (â€”N&boxH;C&boxH;O) to the molar concentration of the hydroxyl groups (â€”OH) is from 0.05 to q, this value q being selected so as not to achieve gelling of the prepolymer, from 1 to 200 parts by weight of acrylate oligomer(s), from 1 to 100 parts by weight of acrylate monomer(s), from 0 to 100 parts by weight of plasticizer(s), from 0 to 5 parts by weight of additive(s), and from 0.1 to 5 parts by weight of radical initator.