| abstract |
(57) [Summary] [Object] To provide a novel aromatic aminoketone that exhibits excellent activity as a photoinitiator for photopolymerizing an ethylenically unsaturated compound. [Structure] [Chemical 1] [Ar is fluorine or N (R 7) a phenyl group substituted with (R 8), R 1 and the alkyl group of R 2 are each C 1 -C 8 or together, C 2 -C 9 - Alkylene and R 3 and R 4 are each hydrogen, C 1 -C 12 -alkyl, C 1 -C 4 -alkoxy substituted C 2 -C 4 -alkyl, C 3 -C 5 -alkenyl, or together C 3 -C 7 - alkylene radical, it -O- or -N (R 12) - may be interrupted by, R 7 and R 8 are each hydrogen, C 1 -C 12 - alkyl, C 1 - C 4 - alkoxy-substituted C 2 -C 4 - alkyl, C 3 -C 5 - alkenyl, or together C 3 -C 7 - alkylene radical, it -O- or -N (R 12) - A compound of formula I, wherein R 12 is C 1 -C 4 -alkyl,]. |