| 摘要 |
PURPOSE:To obtain a photosensitive compsn. having high sensitivity and contg. a free radical producing agent having high sensitivity to photolysis by incorporating a specified s-triazine compd. and a compd. having at least one addition- polymerizable ethylenic unsatd. double bond. CONSTITUTION:This photosensitive compsn. contains a photosensitive s-triazine compd. represented by formula I and a compd. having at least one addition- polymerizable ethylenic unsatd. double bond. In the formula I, each of R1 and R2 is H atom, alkyl, substd. alkyl group or the like, R1 and R2 may form a hetero ring consisting of nonmetallic atoms together with N bonding to R1 and R2, each of R3 and R4 is H, halogen atom, alkyl group or the like, each of X and Y is Cl or Br atom and each of (m) and (n) is 0, 1 or 2. The photosensitive compsn. has high sensitivity and can be advantageously used to produce a photosensitive lithographic printing plate, a proofreading plate for printing or the like. |
