PHOTOSENSITIVE RESIN COMPOSITION FOR PLANOGRAPHIC PRINTING

摘要

PROBLEM TO BE SOLVED: To obtain a photosensitive resin compsn. for planographic printing, especially a photosensitive resin compsn. giving a planographic printing plate having improved wear and scuffing resistances and high printing resistance. SOLUTION: This photosensitive resin compsn. contains an ethylenic unsatd. polymerizable compd., an alkali-soluble resin and a photopolymn. initiator or further contains a diazonium compd. The ethylenic unsatd. polymerizable compd. contains urethane poly(meth)acrylate having >=6 (meth)acryloyl groups in one molecule obtd. by allowing a compd. having >=3 isocyanato groups in one molecule to react with a compd. having one hydroxyl group and >=2 (meth)acryloyl groups in one molecule.