Patent ID: 7074847

Claim:
A resin composition comprising: an epoxy (meth)acrylate oligomer having an average molecular weight of not more than 1500, a copolymer of a (meth)acrylic ester with styrene or Î±-methylstyrene, a thermoplastic urethane elastomer, a (meth)acrylic monomer, and a photopolymerization initiator, polyether-modified polydimethylsiloxane as an additive, and, as an internal release agent, a phosphoric ester represented by formula 1 or a phosphoric ester represented by formula 2: HOP(â•O)(OC n H 2n+1 ) 2 (1) wherein n is an integer of 4 or more; and HOP(â•O)(C n H 2n+1 )(OC n H 2n+1 )â€ƒâ€ƒ(2) wherein n is an integer of 4 or more.