Radiation crosslinkable compositions

Claim 1

A photopolymerizable composition comprising 1) a compound having a formula selected from the group consisting of Formulae I, III, IV, and v, wherein Formula I is: ##STR29## in which R is hydrogen, halogen, or methyl, and a is an integer of 1 to 6; R 1 is a polyvalent aliphatic group having 1 to 15 carbon atoms and a valence of c+1, and optionally containing one or two catenary oxygen or ##STR30## b is zero or an integer of 1 to 6, c is an integer of 2 to 5, d is zero or an integer of 1 to 6; and R 2 is a divalent linear or branched saturated or unsaturated aliphatic group having 2 to 10 carbon atoms or a divalent arylene group having 6 to 10 carbon atoms; R 3 is selected from the group consisting of hydrogen, ##STR31## in which each R 10 is hydrogen or lower alkyl of 1 to 4 carbon atoms, and each R 4 and R 5 is independently an organic group selected from alkyl groups having 1 to 10 carbon atoms, ethylenically unsaturated groups having 2 to 10 carbon atoms, cycloalkyl groups having 5 to 7 ring carbon atoms and a total of 5 to 10 carbon atoms, and aryl groups having 6 to 10 carbon atoms, with the provision that 5 to 100 mole percent of all R 3 groups are ##STR32## in which R 4 is substituted by ##STR33## and w is 1 or 2; R 6 is a divalent organic group; R 9 is R 6 or a polyvalent organic group having a valence of g+1, in which g is an integer having a value of 1 to 10, that is aliphatic, cycloaliphatic, or aromatic and having a weight average molecular weight of in the range of 28 to 1000, and h is zero or a number having an average value of up to 20, with the proviso that when R 9 is not R 6 , then h is zero; Formula III is: ##STR34## wherein A, R 3 , and R 9 are as previously defined; Formula IV is: ##STR35## wherein A, R 3 , and R 4 are as previously defined; and Formula V is: ##STR36## wherein A, R 3 , and R 9 are as previously defined, 2) a binder resin, and 3) a radiation sensitive system capable of initiating free radical polymerization.