| 摘要 |
PROBLEM TO BE SOLVED: To provide a photopolymerization initiator, which has sufficient activity to light, particularly, visible light, and is reduced in the possibility of including impurities as much as possible. SOLUTION: The photopolymerization initiator comprises an α-diketone such as camphoquinone, a nonpolymerizable acidic compound such as orthophosphoric acid or methylphosphoric acid, and a carbonyl group-substituted aromatic amine represented by the general formula (1) such as 4-dimethylamino benzoic acid ethyl ester or 4-dimethylaminoacetophenone, wherein R<SB>1</SB>represents a hydrogen atom or an alkyl group, R<SB>2</SB>represents an alkyl group, X represents a hydrogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkylamino group, an aryl group, an aryloxy group or an arylamino group, and n represents an integer of 1-5. COPYRIGHT: (C)2009,JPO&INPIT |
