High speed aqueous solvent developable photopolymer compositions

Claim 1

An energy sensitive polymer having the formula: ##STR11## wherein R 1 independently is hydrogen or methyl; R 2 is given by ##STR12## wherein n is 0 or 1; R 5 , R 6 , R 7 , and R 8 are independently an alkyl group having 1 to 12 carbon atoms or a cycloalkyl group having 5 to 12 carbon atoms, an aryl or aralkyl group having 6 to 12 carbon atoms or at least one of the pairs R 5 and R 6 , and R 7 and R 8 , taken together with the carbon to which it is joined forms a 5- or 6-membered carbocyclic ring, or any of R 5 , R 6 , R 7 , and R 8 may be H when n is 1; W is --NH--, -NR 20 , --S-- or --O--; wherein R 20 is alkyl of 1 to 12 carbon atoms; and Z represents ##STR13## wherein R 5 , R 6 , R 7 , R 8 , and n are as previously described; R 3 is a polymerizable, ethylenically unsaturated group selected from (a) ##STR14## in which R 9 is an alkylene group having 1 to 12 carbon atoms, an arylene group having 6 to 10 carbon atoms, an oxyalkylene group or a poly(oxyalkylene) in which said alkylene group has 2 to 4 carbon atoms, the number of oxygen atoms is a positive integer less than or equal to four; R 10 is hydrogen, cyano, a carboxyl group, or a --C(═O)NH 2 group; and R 11 is hydrogen, an alkyl group having 1 to 12 carbon atoms, or a phenyl group or naphthyl group; or (b) -R 9 -W-T in which R 9 is as defined as in (a), W is as previously defined, and T is an ethylenically unsaturated group selected from the group consisting of acryloyl, methacryloyl, cinnamoyl, maleoyl, fumaroyl, itaconoyl, and crotonoyl, and is preferably acryloyl or methacryloyl; a, b, c, and d are independently integers, wherein a and b are at least 1, and the sum of a+b+c+d is sufficient to provide a polymer having a number average molecular weight in the range of 2,000 to 1,000,000; G is given by -R 9 -N + R 12 R 13 R 14 X - , wherein R 9 is as previously defined, and R 12 -R 14 are independently an alkyl group having 1 to 16 carbon atoms or a cycloalkyl group having 5 to 12 carbon atoms, an aryl or aralkyl group having 6 to 12 carbon atoms or any two or all three of R 12 -R 14 taken together with the nitrogen to which they are joined can form a 5- to 8-membered heterocyclic ring, and X - represents any non-interfering anion including anions located elsewhere on the polymeric backbone or side chains; R represents an aryl group having from 6 to 30 carbon atoms, cyano, --CO 2 H, carboalkoxy group having from 2 to 40 carbon atoms, or a mono- or dialkylcarbamoyl group having from 2 to 40 carbon atoms; R 4 represents hydrogen, a solubilizing cation, or -E-A wherein E represents an organic divalent connecting group having up to a total of about 18 C, N, S, and nonperoxidic O atoms, and A is an acid selected from carboxylic acids, sulfonic acids, phosphonic acids, and salts thereof.