Benzoyl-coumarin polymerizable photoinitiators

A compound of Formula (I)

• wherein
• G is a residue of an optionally alkoxylated polyhydroxy compound;
• m, n and p are numbers and m+n+p is from 2 to 10;
• m and n are independently an number from 1 to 8;
• p is from 0 to 8;
• x is an integer number from 0 to 10, and when x is 0 A is directly linked to the carbonyl group;
• A represents, each independently, CHR3, O, S, NR4 where R4 is an alkyl C1-C6 group;
• Y represents, each independently a direct bond or a substituted or unsubstituted divalent linking group comprising 1 to 14 carbon atoms;
• Z represents, each independently, a radically polymerizable functional group selected from the group consisting of an acrylate, a methacrylate, a styrene, an acryl amide, a maleate, a fumarate, an itaconate, a vinyl ether, an allyl ether, an allyl ester, a maleimide, a vinyl nitrile and a vinyl ester;
• R3 represents, each independently hydrogen, alkyl C1-C12, substituted or unsubstituted phenyl, aryl or heteroaryl, cycloalkyl C5-C6, alkyl C1-C12 which is substituted with SH, —N(alkyl C1-C6)2, piperidino, morpholino, piperazino, —OH, —O(alkyl C1-C12), —COOH;
• or C1-C12 alkoxy;
• R1, R2 are, each independently, hydrogen, alkyl C1-C12, substituted or unsubstituted phenyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, cycloalkyl C5-C6, alkyl C1-C12 which is substituted with SH, —N(alkyl C1-C6)2, piperidino, morpholino, piperazino, —OH, —O(alkyl C1-C12), —COOH;
• or C1-C12 alkoxy