PHOTOPOLYMERIZABLE COMPOSITION AND PHOTOSENSITIVE LITHOGRAPHIC PRINTING PLATE

摘要

A photopolymerizable composition comprising (A) an addition-polymerizable compound having an ethylenically unsaturated double bond (B) a compound of the formula: ¢I! ¢wherein R1 is substituted or nonsubstituted phenyl group, R2 and R3 are the same or different and indicate a hydrogen atom or a C1-4 alkyl group, R4 is an alkylene group which may have at least one sort of a substituent selected from alkyl, hydroxyl and oxo (=O) on a main chain, or which may contain at least one sort selected from an oxygen atom and a cycloalkylene group in a main chain, R5 is a hydrogen atom or a methyl group, and a and b are independently 0 or 1!, (C) a light absorbing compound, and (D) a film-forming polymer having alkaline solubility or alkaline swelling characteristic is disclosed. There is also disclosed a photosensitive lithographic printing plate comprising the photopolymerizable composition.