Patent ID: 8691352

Claim:
A photopolymerizable composition comprising: a photopolymerization initiator (A) having a partial structure represented by the following Formula (1); and a polymerizable compound (B): wherein, in Formula (1), R 3 and R 4 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heteroaryl group or an alkoxy group; R 3 and R 4 may bind to one another to form a ring; X represents OR 5 , SR 6 or NR 17 R 18 , wherein R 5 , R 6 , R 17 and R 18 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heteroaryl group; and R 17 and R 18 may bind to one another to directly form a ring, or form a ring via a divalent linking group, wherein the photopolymerization initiator having the partial structure represented by Formula (1) comprises a compound represented by the following Formula (2): wherein, in Formula (2), R 1 and R 2 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heteroaryl group; R 1 and R 2 may bind to one another to form a ring; B 1 represents a carbonyl group; and R 3 , R 4 and X have the same definition as R 3 , R 4 and X in Formula (1), respectively.