Photopolymerizable composition for short wavelength semiconductor laser exposure

Abstract

Disclosed is a photopolymerizable composition which comprises (i) a sensitizing dye represented by the following formula (I-1), (ii) a titanocene compound, and (iii) an addition polymerizable compound having at least one ethylenically unsaturated double bond: wherein A and B each represents —S—, NR3, or NR4; R3 and R4 each represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; Y1 and Y2 each represents a non-metallic atomic group to form a basic nucleus of a dye together with the adjacent A or B, and the adjacent carbon atoms; R1 and R2 each represents a monovalent non-metallic atomic group, or they may be bonded to each other to form an aliphatic or aromatic ring.

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