PHOTOSENSITIVE RESIN COMPOSITION, PHOTOSENSITIVE LAMINATE, AND FLEXOGRAPHIC PRINTING PLATE

摘要

Disclosed is a photosensitive resin composition which can be used as a printing plate material having good ink resistance and good ozone resistance, and contains a thermoplastic elastomer component (a), a photopolymerizable unsaturated monomer (b) and a photopolymerization initiator (c).  The thermoplastic elastomer component (a) contains a syndiotactic-1,2-polybutadiene (i) having a 1,2-vinyl bond content of 70-100% and a crystallinity of 10-50% in an amount of 1 mass% or more relative to the total mass of the thermoplastic elastomer (a), and a styrene-isoprene block copolymer (ii) in an amount of 99 mass% or less relative to the total mass of the thermoplastic elastomer (a).  The ratio of the total mass of the syndiotactic-1,2-polybutadiene (i) and the styrene-isoprene block copolymer (ii) to the total mass of the thermoplastic elastomer (a) is 70-100 mass%, and the ratio of the thermoplastic elastomer (a) content to the total mass of the photosensitive resin composition is 55-85 mass%.