| abstract |
A photopolymerizable composition comprises: (i) a polymerizable compound carrying an addition-polymerizable unsaturated bond; (ii) a methine compound; (iii) at least one compound selected from the group consisting of: (a) compounds having carbon-halogen bonds, (b) aromatic onium salts, (c) organic peroxides, (d) thio compounds, (e) hexaarylbiimidazoles, (f) ketooxime esters, and (g) compounds represented by the following general formula (III):n n wherein R⁶, R⁷, R⁸ and R⁹ may be the same or different and each represents a substituted or unsubstituted alkyl, aryl, alkenyl, alkynyl or heterocyclic group, provided that at least two of R⁶, R⁷, R⁸ and R⁹ may be bonded together to form a ring structure and that at least one of them represents an alkyl group; and nZ ⁺ represents an alkali metal cation or a quaternary ammonium cation. The composition has a high sensitivity to a wide range of actinic light rays extending from ultraviolet to visible light. |