Radiation-polymerizable mixture

Claim 1

A radiation-polymerizable mixture, consisting essentially of: (a) an amount of a polymeric binder selected from the group consisting of (i) a polymeric binder that is water-insoluble and soluble or at least swellable in aqueous-alkaline solutions, (ii) a polyacrylate and (iii) a polymethacrylate, said amount ranging from 25% to 75% by weight, based on the total weight of non-volatile constituents; (b) from 25% to 75% by weight, based on the total weight of non-volatile constituents, of polymerizable material, comprising (1) up to 95% by weight, based on the weight of polymerizable material, of a compound that is polymerizable by free radicals, that has a boiling point above 100° C. at atmospheric pressure, and that contains at least two ethylenically unsaturated polymerizable groups and (2) from 5% to 100% by weight, based on the weight of polymerizable material, of an acrylic or alkacrylic acid derivative that is polymerizable by free radicals and that has a boiling point above about 100° C. at atmospheric pressure, wherein the weight-percentages in (a) and (b) are based, respectively, on the total weight of non-volatile constituents; and (c) from 0.01 to 10% by weight, based on the total weight of non-volatile constituents, of at least one initiator compound capable of initiating the polymerization of said acid derivative under the action of actinic radiation, wherein said acid derivative is represented by the formula: ##STR5## wherein A is O, NH, or N-alkyl, Q is --CO--C p H 2p --Z-- or --C k H 2k O--, Z is O or NH, R 1 is H or alkyl, R 2 is alkyl, alkenyl, cycloalkyl, aryl, aralkyl or SOT 2 R 3 , R 3 is alkyl, alkenyl, cycloalkyl, aryl aralkyl or aryloxy, k is a number from 3 to 20, l is a number from 0 to 20, m is a number from 2 to 20 n is a number from 1 to 20, and p is a number from 2 to 10.