Patent ID: 6541537
Filing Date: 2003-04-01
Classification: C08F,G03F

Abstract:
A photopolymerizable ethylenically unsaturated copolymer formed by a reaction process comprising:(a) providing an epoxide-containing acrylate monomer, said epoxide-containing acrylate monomer having at least one epoxide group; (b) providing an ethylenically unsaturated monomer, (c) reacting (a) with (b), thereby forming an epoxide-containing acrylic copolymer chain, the epoxide-containing acrylic copolymer chain having epoxide groups positioned along said chain; (d) providing less than a molar excess of a donor compound, the donor compound being selected from the group consisting of: ethylenically unsaturated acids and anhydrides; (e) providing a ring-opening catalyst; (f) reacting less than a molar excess of said donor compound in the presence of said ring-opening catalyst, with epoxide groups of the epoxide-containing acrylic copolymer chain, said molar amount of said donor compound consuming between about 25 and about 75 percent of said epoxide groups in said epoxide-containing acrylic copolymer chain; (g) thereby forming an ethylenically unsaturated glycidyl acrylic copolymer having reactive epoxide groups, said reactive epoxide groups being capable of undergoing a subsequent cationic reaction.