Patent ID: 7771490

Claim:
Compounds of formula wherein R 1 , R 2 , R 3 , R 4 and R 5 independently from each other are hydrogen; unsubstituted or substituted, straight-chain or branched, monocyclic or polycyclic, interrupted or uninterrupted C 1 -C 14 alkyl; C 2 -C 14 alkenyl; C 6 -C 10 aryl; C 6 -C 10 aryl-C 1 -C 10 alkyl; or C 5 -C 10 alkyl(C 5 -C 10 aryl); A is a residue of an organic dye selected from the group consisting of formula: R 6 and R 7 are hydrogen; or methyl; and Y 1 is a direct bond; C 1 -C 10 alkylene; C 5 -C 10 cycloalkylene; C 5 -C 12 arylene; or C 5 -C 12 arylene-(C 1 -C 10 alkylene).