Patent ID: 7285663

Claim:
A compound of the formula (I) wherein C is of the formula (a) wherein R 1 independently of one another are hydrogen, C 1 -C 25 alkyl, C 5 -C 12 cycloalkyl, C 6 -C 24 aryl, C 1 -C 25 alkyl-(C 6 -C 10 )-aryl, a heteroaromatic radical having 1, 2 or 3 heteroatoms selected from the group consisting of N, O and S, —(CH 2 ) n —COR 3 and —(CH 2 ) m —OR 4 , in which R 3 is hydroxyl, unsubstituted or mono- or poly-hydroxyl- or amino-substituted C 1 -C 25 alkoxy, C 1 -C 25 alkylamino, di-(C 1 -C 25 alkyl)amino, C 1 -C 25 alkyl-C 6 -C 24 arylamino, (C 6 -C 24 aryl)amino di-(C 6 -C 24 aryl)amino or C 2 -C 24 alkenyloxy, and R 4 is hydrogen or —CO—(C 1 -C 25 alkyl) and n and m independently of one another are an integer from 0 to 6, and wherein in R 1 , R 3 and R 4 a C—C unit can, optionally be replaced by an ether unit C-O-C, and B is ortho-phenylene.