Water-developable photosentitive resin composition, and resin or printing plate therefrom.

摘要

Disclosed is a water-developable photosensitive resin composition capable of hot melt molding, which comprises: (i) a water soluble or water dispersible polyvinyl alcohol prepared by saponifying a copolymer which is obtained from copolymerizing 0 to 20 mol % of a monomer not having an ionic group (hereinafter referred to as "nonionic monomer"), 0 to 10 mol % of an ionic group-containing monomer (hereinafter referred to as "ionic monomer") and the remaining amount of a vinyl ester in the presence of a thiolic acid wherein the total content of the ionic monomer and nonionic monomer is 0.1 to 20 mol %; said polyvinyl alcohol having a terminal mercapto group, a saponification degree of the vinyl ester unit of 50 to 70 mol %, and a hot melt flow starting temperature of 60 to 130 DEG C (ii) a polymerizable monomer, and (iii) a photopolymerization initiator. e