water soluble or dispergierbares photopolymerisierbares mixture and its use for druckzwecken.

摘要

The novel water-soluble or water-dispersible photopolymerisable mixture which contains, based on its total amount, A) 46 to 53% by weight of a binder containing, based on the binder (A), a1) 20 to 80% by weight of a polyvinyl alcohol resin having a degree of saponification of 75 to 85% and a number average degree of polymerisation Pnof 250 to 350, a2) 20 to 80% by weight of at least one graft copolymer of vinyl alcohol and alkylene oxides having a degree of saponification of over 80%, a content of alkylene oxide units of 10 to 40% by weight and a mass average degree of polymerisation Pn of 300 to 500, and a3) 0 to 60% by weight of at least one polyvinyl alcohol resin having a degree of saponification of over 75% and a number average degree of polymerisation Pn of 350 to 450, B) 35 to 44% by weight of at least one water-soluble monofunctional monomer, C) 6 to 9% by weight of at least one polyfunctional monomer and D) 0.4 to 5% by weight of at least one photopolymerisation initiator, is eminently suitable for producing photopolymerisable recording layers of novel photosensitive recording elements. The novel photosensitive recording elements are suitable, in particular, for producing newspaper printing plates.