PHOTO- AND/OR THERMO-CURABLE COPOLYMER, CURABLE RESIN COMPOSITIONS, AND CURED ARTICLES

摘要

Disclosed is a photo- and/or thermo-curable copolymer having polymerizable unsaturated groups in side chains, which is obtainable by reacting a copolymer (P) with an epoxy-containing polymerizable unsaturated compound (C), the copolymer (P) containing monomer units derived from a carboxyl-containing polymerizable unsaturated compound (A) and monomer units derived from at least one epoxy-containing polymerizable unsaturated compound (B) represented by following Formula (1) or (2), in which the epoxy group of the epoxy-containing polymerizable unsaturated compound (C) has been added to part of the carboxyl groups of the copolymer (P). In the formulae, R a s each represent hydrogen or hydroxyl-substituted or -unsubstituted alkyl having 1 to 4 carbon atoms; and R b s each represent single bond or alkylene having 1 to 18 carbon atoms which may contain heteroatom(s). The curable copolymer is highly stably synthesized and stored, has satisfactory curing properties, and permits both epoxy crosslinking and radical crosslinking.