PHOTOSENSITIVE RESIN COMPOSITION AND FLEXOGRAPHIC RESIN PLATE

摘要

The present invention provides a photosensitive resin composition which comprises an urethane resin obtained by reacting (A) a carboxyl group-containing polymer having an acid value of 30 mg KOH/g or more and a glass transition temperature of 30 DEG C or more, (B) a compound having two isocyanate groups in one molecule, (C) a compound having two hydroxyl groups in one molecule and (D) a photopolymerizable unsaturated monomer having one hydroxyl group in one molecule, and a photopolymerization initiator, and a resin plate for flexography using the photosensitive resin composition, whereby the photosensitive resin composition having water developing properties, high in sensitivity and impact resilience, and excellent in water resistance, ink resistance and press life of a hardened portion forming a line pattern area of a printing plate material and the resin plate for flexography prepared by the use of the photosensitive resin composition can be provided.