| 摘要 |
PURPOSE:To provide the title compsn. having high photosensitivity to visible light and being suitable for a laser-recording printing plate, by compounding an ethylenically unsatd. addn.-polymerizable compd. with a photopolymn. initiator consisting of three specified components. CONSTITUTION:A photopolymn. initiator consisting of a compd. (A) of formula I (wherein M1 and M2 are each H, an alkali metal, etc.; X1-X8 are each monovalent group) (e.g., erythrocin), a compd. (B) of formula II (wherein Ar is a mono- or di-valent arm. residue; R1-R4 are each 1-20C alkyl, aralkyl, etc.; n is 0 or 1) (e.g., beta-N,N-dibenzylaminoethanol) and a compd. (C) of formula III (wherein R5, R6 and R7 are each 1-20C alkyl, aryl, etc.; X is O, etc.; p and q are each 0-3; r is 0-2; p+q+r=3) (e.g., formula IV) is compounded with an ethylenically unsatd. addn.-polymerizable compd. (e.g., triethylene glycol diacrylate). |
