Resin composition for laser engraving, flexographic printing plate precursor for laser engraving and process for producing same, and flexographic printing plate and process for making same

摘要

Disclosed are a resin composition for laser engraving, comprising (Component A) at least one polymer selected from the group consisting of following (Component A-1) to (Component A-3), (Component B) a polyfunctional ethylenically unsaturated compound, and (Component C) a polymerization initiator,
(Component A-1) a polyisoprene that is a plastomer at 20°C and does not have an ethylenically unsaturated group at the ends of the main chain,
(Component A-2) a polybutadiene that is a plastomer at 20°C and does not have an ethylenically unsaturated group at the ends of the main chain, and
(Component A-3) an unsaturated polyester urethane that is a plastomer at 20°C, has an ethylenically unsaturated group in the interior of the main chain, and does not have an ethylenically unsaturated group at the ends of the main chain.