| abstract |
PROBLEM TO BE SOLVED: To provide a photopolymerization initiator having a large molecular extinction coefficient in a near ultraviolet region of 300 to 400 nm and increasing the curing speed, and a photocurable composition containing the same. SOLUTION: The following general formula (1); (Wherein, R 1 , R 2 and R 3 each independently represent a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, an alkyl group having 1 to 10 carbon atoms, an alkoxy group or an acyl group having 1 to 4 carbon atoms) And X − represents an inorganic acid ion or an organic acid ion.) And a photopolymerization initiator comprising the aromatic sulfonium salt and a photocurable composition containing the photopolymerization initiator. [Selection diagram] None |