PHOTOSENSITIVE RESIN COMPOSITION AND RESIN PLATE FOR FLEXOGRAPHIC PRINTING

摘要

PROBLEM TO BE SOLVED: To provide a photosensitive resin composition excellent in cold flow durability and to provide a resin plate for flexographic printing using the photosensitive resin composition as a photosensitive resin layer.

SOLUTION: The photosensitive resin composition contains the following urethane resin and a photopolymerization initiator. The urethane resin has structural units derived from components of: (A) a polymer having a carboxyl group and having ≥30 mgKOH/g acid value and ≥-15°C glass transition temperature; (B) a compound having two isocyanate groups in one molecule; (C) a compound having two hydroxyl groups in one molecule; (D) a photopolymerizable unsaturated monomer having one hydroxyl group or carboxyl group in one molecule; and (E) a molecular weight jump-up agent having two or more groups which react with an isocyanate group in one molecule.

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