PHOTOSENSITIVE RESIN COMPOSITION FOR FORM PLATES AND PRINTING BLOCK MATERIAL OF PHOTOSENSITIVE RESIN

摘要

Constitution: a photosensitive resin composition for form plates, which comprises a combination of A, B-1, C and D, or another combination of A, B-2, C and D, where A: hydrophilic polymer; B-1: rubber having a molecular weight of not less than 40,000; B-2: dynamic vulcanized rubber; C: unsaturated photopolymerizable compound having an ethylenic double bond in the molecule; D: photopolymerization initiator. Effect: the composition has a high image reproducibility, a flexibility as a material for flexographic form plate, and a high water-developability, and satisfies the adaptability to aqueous ink. Accordingly, this composition can give a flexographic form plate having high durability in the flexographic printing using aqueous ink and other kinds of flexographic ink, and a flexographic printing block material of a high aqueous development factor having an excellent elasticity.