Photopolymerizable mixture, and a recording material produced therefrom

Claim 1

A photopolymerizable mixture consisting essentially of: a) a polymeric binder present in an amount sufficient to form a uniform layer, b) an acrylate or alkacrylate of a polyhydric alcohol represented by the formula ##STR12## in which Q denotes ##STR13## R denotes an alkyl, hydroxyalkyl or aryl group, R 1 and R 2 each denote a hydrogen atom, an alkyl group or an alkoxyalkyl group, R 3 denotes a hydrogen atom, a methyl group or an ethyl group, X 1 denotes a saturated hydrocarbon group having 2 to 12 carbon atoms, X 2 denotes a (c+1)-valent saturated hydrocarbon group in which up to 5 methylene groups may be replaced by oxygen atoms, D 1 and D 2 each denote a saturated hydrocarbon group having 1 to 5 carbon atoms, E denotes a saturated hydrocarbon group having 2 to 12 carbon atoms, a cycloaliphatic group which has 5 to 7 ring members and which contains, where appropriate, up to 2 N, O or S atoms as ring members, an arylene group having 6 to 12 carbon atoms, or a heterocyclic aromatic group having 5 or 6 ring members, a denotes 0 or an integer from 1 to 4, b denotes 0 to 1, a+b is at least 1, c denotes an integer from 1 to 3, m denotes 2, 3 or 4, depending on the valency of Q, and n denotes an integer from 1 to m, it being possible for all radicals of the same definition to be identical to or different from one another, and c) a photoreducible dye as photoinitiator, wherein components b) and c) are present in an amount sufficient to render exposed areas insoluble in developer and wherein the acrylate or alkacrylate contains one or more groups which are photooxidizable upon exposure in the presence of the photoreducible dye, and one or more urethane groups.