| abstract |
(I) A photosensitive resin composition comprising n (i) a thermoplastic elastomer selected from n (A) a poly(amide-imide) ester produced by reacting a polyamide-forming monomer with either an aromatic carboxylic acid or its anhydride and either a polyalkylene glycol or an α,ω-dihydroxy hydrocarbon, n (B) a poly(amide-imide) urethane produced by reacting the above poly(amide-imide) ester with a diisocyanate compound, and n (C) a poly(amide-imide) urethane produced by reacting the above diisocyanate compound with a mixture of polymer diol and a poly(amide-imide) ester obtained from a Chthd 2-C 4 alkylene glycol and a polyamide-forming monomer, and n (ii) an ethylenic unsaturated compound, and n (iii) a photopolymerization initiator, n (II) a photosensitive sheet for printing plate formation which comprises a resin layer formed of the above composition, and n (III) the above defined thermoplastic elastomer. |