PHOTOSENSITIVE RESIN COMPOSITION

摘要

The invention provides a photosensitive resin composition suitable for a relief printing plate having good resistance to a water based ink, for which water or a water like solvent can be employed as a developing solution. The resin composition comprises (i) a polymer having a molecular weight of 5,000 to 500,000 which contains an amino group and a polymerizable double bond moiety: (ii) a monomer having an .alpha.,.beta.-ethylenically unsaturated bond and a free acid group which can quaternize the nitrogen atom of the polymer (i); (iii) a photopolymerizable unsaturated compound, and (iv) a photopolymerization initiator.