Patent ID: 6451958
Filing Date: 2002-09-17
Classification: C08G,C09D,Y10T

Abstract:
Polymer having repeating polycarbonate moieties of the formula (I)(Acr)y(A)(Q)(PC)[(Q)(PC)]x(Q)(A)(Acr)yâ€ƒâ€ƒ(I) wherein(Acr)y(A) is the residue of hydroxyalkyl acrylate or hydroxyalkyl methacrylate having an alkyl moiety, A, and where said alkyl, A, has 2 to 5 carbon atoms and wherein Acr is an acrylate or methacrylate moiety; y is the number of acrylate or methacrylate groups linked to moiety A; Q is the residue of one or more organic diisocyanates, which are connected with A via a urethane linkage; PC is the residue of an alkylene diol polycarbonate of the formula (II) HO(ROCOO)nROHâ€ƒâ€ƒ(II) R is one or more (C2 to C10) alkylene or one or more (C6 to C12) aromatic group; y is an integer from 1 to 5; x is from 1 to 20; n is an integer from 1 to 10,000; PC and Q are connected via a urethane group.