PHOTOPOLYMERIZABLE COMPOSITION FOR NEAR INFRARED LASER EXPOSURE AND PHOTOPOLYMERIZABLE PLANOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To provide a photopolymerizable composition for near infrared laser exposure excellent in preservability, and a photopolymerizable planographic printing plate. SOLUTION: The photopolymerizable composition contains (A) an ethylenic monomer, (B) a photopolymerization initiating system which generates a radical in the light of 700-1,300 nm wavelength and (C) an amine compound having an atomic group [-N-CH2-] in its molecule. The photopolymerizable planographic printing plate is obtained by coating the top of a base with the photopolymerizable composition.