Diazo-unsaturated monomer light sensitive compositions

Claim 1

A light sensitive element which comprises: a substrate and an ultraviolet radiation curable composition applied to at least one surface of said substrate, which composition comprises the admixture of: I. From about 10 to 95% by weight of an unsaturated monomer, based on total weight of the unsaturated monomer and diazonium compound, wherein the unsaturated monomer is the reaction product of: A. one equivalent of an isocyanate containing intermediate which is the reaction product of i. about one equivalent of a polyol with ii. two equivalents of a diisocyanate and B. one equivalent of a monomeric olefinically active hydrogen in the form of a hydroxyl group, said reaction product being a monomeric, solvent-free liquid containing zero percent free isocyanate groups, and II. From about 1 to 95% by weight, based on the weight of the unsaturated monomer, of one or more solid resins selected from the group consisting of polyurethanes, epoxies, polyvinyl acetals, polyethylene oxides, polyamides, phenol formaldehydes, acrylics, ureaformaldehydes, and cellulosic resins, and III. From about 10-95%, based on total weight of unsaturated monomer and diazonium compound of a light sensitive, negative acting diazonium compound, whereby before light exposure said admixture is organic solvent soluble, water emulsifiable and is capable of forming a non-tacky solid film and after light exposure said admixture is not soluble in organic solvents and is non-water emulsifiable.