Photopolymerizable composition

摘要

A photopolymerizable composition comprising an addition polymerizable ethylenically unsaturated compound and a photopolymerization initiator system, wherein the photopolymerization initiator system comprises: (a) a squarylium dye containing a following formula (I), (I) wherein each of R1 and R2 is a substituted or unsubstituted alkyl group or aryl group, and each of A and B is a substituted or unsubstituted benzene ring or naphthalene ring, and (b) a s-triazine compound having at least one halogenated methyl group.