Aqueous processable, positive-working photopolymer compositions

摘要

Three-component aqueous processable, positive-working photopolymer compositions comprising (i) an unsaturated polymer comprising (a) about 20 to 1000 milliequivalents of reactive unsaturated carbon to carbon groups per 100 g of polyene and (b) about 10 to 50 mol percent of N-alkenylmaleimide units; (ii) a reactive mercapto acid and (iii) a radiation-sensitive, radical-generating initiator; substrates coated with such compositions; and a photoimaging process.