| abstract |
PURPOSE: A photopolymerizable composition highly sensitive to a light source in the visible region, comprising an addition-polymerizable compound having an ethylenically unsaturated double bond and a combination of a specified photoinitiator system and a specified thiol compound. n CONSTITUTION: In a photopolymerizable composition containing an addition- polymerizable compound having at least one ethylenically unsaturated double bond and a photoinitiator system, said photoinitiator system comprises (a) a p-dialkylaminostyrene derivative or p-dialkylaminophenylbutadiene derivative of formula I , wherein R 1 and R 2 are each alkyl, Y is -O-, -S-, or -CH=CH-, or may form a heteroaromatic ring B, together with the trivalent nitrogen atom, and ring A is a benzene ring or a naphthalene ring and is condensed with ring B, and n is 1 or 2, (b) hexaarylbiimidazole, and (c) a thiol compound represented by formula II, wherein Z is -O-, -S-, -NH-, or -C(O)NH-. n COPYRIGHT: (C)1984,JPO&Japio |