Patent ID: 8518303

Claim:
An adhesive composition comprising: (a) a radical generator; (b) a thermoplastic resin; and (c) a urethane(meth)acrylate having two or more radical-polymerizing groups in the molecule and a weight-average molecular weight of 3000-30,000, wherein the urethane(meth)acrylate includes a divalent organic group in the molecule represented by the following formula (B), or by the following general formula (C), or by the following formula (B) and the following formula (C), wherein in formula (C), R 5 and R 6 respectively represent hydrogen and methyl or methyl and hydrogen, and the urethane(meth)acrylate also includes in the molecule at least one group selected from the group consisting of divalent organic groups represented by the following general formulas (D), (E) and (F), wherein in formulas (D), (E) and (F), l, m and n each represent an integer of 1-60.