| abstract |
The present invention relates to polymeric photoinitiators of formula (I) or (II).n n n Formula In n n n n n n n Formula IIn n n n n n n n In the above formulas (I) and (II),n n n n and m are each independently 3 to 5,n n n o is 10 to 16,n n n p is 4 to 8,n n n R is phenyl-CO-CO-O-,n n n Y and Y 'are independently of each other C 1 -C 10 alkylene or-[(CH 2 ) a -O- (CH 2 ) b ] c- (where a is 2 to 10, b is 0 to 10 and and c is 1 to 3, provided that a methylene group exists between two oxygen atoms, or at least one. |