A compound having the general formula, wherein: - M is a group comprising a number z of (meth)acrylate groups equal to at least one, - L and Q are linkers, - G is a linker comprising a number p of unreacted hydroxyl groups comprised between 0 and 100, - R 1 and R 2 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, or • are independently selected from the group consisting of: ▪ H, ▪ C 1-30 alkyl, ▪ C 2-30 alkenyl, and ▪ 5-6 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 C 1-30 alkyl or by a C 1-30 alkyloxy or by a hydroxyl or by a C 1-6 alkyl substituted acyloxy or fused with a phenyl, wherein each of said C 1-30 alkyl and C 2-30 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 C 1-10 alkoxy group, and • an amine of formula -NR 3 R 4, wherein R 3 and R 4 are independently selected from the group consisting of H and C 1-8 alkyl, and - n is from 1 to 100, - m is from 1 to 100, - x is from 0 to 100, and - R, R" and R'" are independently selected from the group consisting of H, C 1-8 alkyl, C 1-10 alkoxy and halogen, with the proviso that if R 1 is a hydrogen atom, then the carbon atom in R 2 directly attached to the nitrogen must be attached to at least two carbon atoms. - M is a group comprising a number z of (meth)acrylate groups equal to at least one, - L and Q are linkers, - G is a linker comprising a number p of unreacted hydroxyl groups comprised between 0 and 100, - R 1 and R 2 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, or • are independently selected from the group consisting of: ▪ H, ▪ C 1-30 alkyl, ▪ C 2-30 alkenyl, and ▪ 5-6 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 C 1-30 alkyl or by a C 1-30 alkyloxy or by a hydroxyl or by a C 1-6 alkyl substituted acyloxy or fused with a phenyl, wherein each of said C 1-30 alkyl and C 2-30 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 C 1-10 alkoxy group, and • an amine of formula -NR 3 R 4, wherein R 3 and R 4 are independently selected from the group consisting of H and C 1-8 alkyl, and • 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, or • are independently selected from the group consisting of: ▪ H, ▪ C 1-30 alkyl, ▪ C 2-30 alkenyl, and ▪ 5-6 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 C 1-30 alkyl or by a C 1-30 alkyloxy or by a hydroxyl or by a C 1-6 alkyl substituted acyloxy or fused with a phenyl, wherein each of said C 1-30 alkyl and C 2-30 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 C 1-10 alkoxy group, and • an amine of formula -NR 3 R 4, wherein R 3 and R 4 are independently selected from the group consisting of H and C 1-8 alkyl, and ▪ H, ▪ C 1-30 alkyl, ▪ C 2-30 alkenyl, and ▪ 5-6 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 C 1-30 alkyl or by a C 1-30 alkyloxy or by a hydroxyl or by a C 1-6 alkyl substituted acyloxy or fused with a phenyl, wherein each of said C 1-30 alkyl and C 2-30 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 C 1-10 alkoxy group, and • an amine of formula -NR 3 R 4, wherein R 3 and R 4 are independently selected from the group consisting of H and C 1-8 alkyl, and • 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 C 1-10 alkoxy group, and • an amine of formula -NR 3 R 4, wherein R 3 and R 4 are independently selected from the group consisting of H and C 1-8 alkyl, and - n is from 1 to 100, - m is from 1 to 100, - x is from 0 to 100, and - R, R" and R'" are independently selected from the group consisting of H, C 1-8 alkyl, C 1-10 alkoxy and halogen,