ACTIVE ENERGY RAY-CURABLE RESIN, ACTIVE ENERGY RAY-CURABLE RESIN COMPOSITION, ACTIVE ENERGY RAY-CURABLE HARD COATING AGENT, CURED FILM USING THEM, DECORATION FILM LAMINATED WITH THE CURED FILM AND PLASTIC INJECTION-MOLDED PRODUCT USING THE DECORATION FILM

摘要

PURPOSE: An active energy ray-curable resin is provided to improve processability in injection molding, thereby providing an injection-molded plastic product with excellent hard-coated surface, high elongation, and high hardness. CONSTITUTION: An active energy ray-curable resin is obtained by conducting a reaction of alpha, beta-unsaturated carboxylic acid to a copolymer with a branched structure and has an average molecular weight of 10,000-100,000. The copolymer is obtained by a reaction of an epoxy group-containing (meth)acrylate-based monomer and a macro-monomer which has an unsaturated double bond at one terminal, does not contains an epoxy group and carboxyl group, and has a weight average molecular weight of 1,000-20,000, with a mixing ratio of 80:20-40:60. The energy ray-curable resin composition contains the active energy ray-curable resin and a photopolymerization initiator.