| 摘要 |
PURPOSE:To obtain a photopolymerizable composition having good stability for a long time and showing no coloring for exposure by incorporating a specified bis-trihalomethyl-S-triazine compd. as a free radical producing agent. CONSTITUTION:A compd. expressed by formula I having two or more photosensitive S-triazine skeltons in a molecule is incorporated into a photopolymerizable compd. In formula I, T is (4,6-bis-trihalomethyl-S-triazine-2-yl) group, X is halogen atom, and Y is bivalent group. Compds. expressed by formulae II, III, etc., are more preferable among the photosensitive bis-trihalomethyl-S-triazine compds. of formula I. The benzene ring may have a-substituent, and as for the substituent, alkyl group, alkoxyl group or halogen atom are used. In formulae II and III, T is the same as in formula I, Y1 is -CnH2n-, -CO(CH2)nCO-, etc., Y2 is -CnH2n-, -CO(C6H4)CO-, etc., R is hydrogen atom, alkyl group of 1-10 carbon atom number, etc. |
