Patent ID: 6900250

Claim:
A polymerizable composition, comprising a self-sensitizing polymerization initiator (A) and a radical-polymerizable compound (B), the polymerization initiator (A) being capable of directly absorbing ultraviolet rays to substantially initiate polymerization and represented by the formula (1): wherein R 5 , R 6 , R 7 , R 8 and R 9 are each independently a hydrogen atom, an alkyl, alkoxyl, hydroxyl or acyloxy group, a halogen atom, or —NR 10 R 11 but at least one of them is —NR 10 R 11 ; wherein R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom, or an alkyl or aryl group; and Z− is an arbitrary anion; and R 10 and R 11 are each independently an alkyl or aryl group.