Patent ID: 8476333

Claim:
A photocurable composition comprising: a urethane oligomer (A) having two or more allyl ether and/or vinyl ether groups; and a polythiol (B) having two or more thiol groups, wherein the urethane oligomer (A) is a urethane oligomer derived from a urethane prepolymer, the urethane prepolymer being synthesized from (i) polypropylene glycol and isophorone diisocyanate or from (ii) polyether polyol and isophorone diisocyanate, the urethane oligomer (A) is a urethane oligomer synthesized from the urethane prepolymer and allyl ether glycol and/or hydroxybutyl vinyl ether, and the polythiol (B) is a polythiol derived from mercaptocarboxylic acid.