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1. A compound having the general formula, Wherein:
PI is a Norrish type II photoinitiator derivative,M is a group comprising a number z of (meth)acrylate groups equal to at least one,Q is a linker,G is a linker comprising a number p of unreacted hydroxyl groups comprised between 0 and 100, R1 and R2 either:
together with the N to which they are attached form a 5-6 membered saturated or aromatic ring optionally fused with a phenyl, said 5-6 membered ring containing one or more carbon atoms, from one to three nitrogen atom(s) and up to one oxygen atom, orare independently selected from the group consisting of:
H,C1-30 alkyl,C2-30 alkenyl, and5-6 membered saturated or aromatic ring containing one or more carbon atoms, up to three nitrogen atoms and up to two oxygen atoms, said ring being optionally substituted by a C1-30 alkyl or by a C1-30 alkyloxy or by a hydroxyl or by a C1-6 alkyl substituted acyloxy or fused with a phenyl,wherein each of said C1-30 alkyl and C2-30 alkenyl are independently optionally substituted with one or more substituents independently selected from:
a 5-6 membered saturated or aromatic ring containing one or more carbon atoms, up to three nitrogen atoms and up to two oxygen atoms,a hydroxyl group,a C1-10 alkoxy group, and an amine of formula —NR3R4, wherein R3 and R4 are independently selected from the group consisting of H and C1-8 alkyl, andn is from 1 to 100,m is from 1 to 100, andx is from 1 to 100, with the proviso that if R1 is a hydrogen atom, then the carbon atom in R2 directly attached to the nitrogen must be attached to at least two carbon atoms. |
