Patent ID: 9562172
Date: 2017-02-07
CPC Classifications: C08F,C08G,C08L,C09J,Y10T

Claim:
1. A photocurable adhesive sheet for optical use, the adhesive containing following components (A) to (D): (A) 100 parts by mass of a urethane (meth)acrylate oligomer having a weight average molecular weight of 20,000 to 100,000; (B) 3 to 70 parts by mass of a phenoxy resin having a glass transition temperature of 50 to 120° C.; (C) 0.1 to 10 parts by mass of a photopolymerization initiator; and (D) 1 to 50 parts by mass of a (meth)acrylate monomer which has 8 to 25 repeating blocks having an ether linkage in the molecule and contains at least one (meth)acryloyl group in the molecule.