Patent ID: 8337569

Claim:
Polymeric dye of formula wherein A and B, independently from each other represent a polymer backbone; X 1 and X 2 independently from each other are a linkage group selected from —S—, —S—S—, —N—, —N=—, —N(R 5 )—, —S(O)—, —SO 2 —, —(CH 2 CH 2 —O) 1-5 —, —(CH 2 CH 2 CH 2 —O) 1-5 —, —C(O)—, —C(O)O—, —OCO—, —CON(R 1 )—, —C(NR 1 R 2 ) 2 —, —(R 1 )NC(O)—, —C(S)R 1 —; which may be interrupted and/or terminated at one or both ends by one or more than one —C 1 -C 30 alkylene- or —C 2 -C 12 alkenylene-; or an optionally substituted, saturated or unsaturated, fused or non-fused aromatic or nonaromatic (heterocyclic) bivalent radical optionally comprising at least one heteroatom; a saturated or unsaturated, fused or non-fused aromatic or nonaromatic bivalent radical comprising at least one heteroatom, which is optionally substituted by C 1 -C 30 alkyl, C 1 -C 30 alkoxy, C 2 -C 12 alkenyl, C 5 -C 10 aryl, C 5 -C 10 cycloalkyl, C 1 -C 10 alkyl(C 5 -C 10 arylene), hydroxy or halogen; R 1 and R 2 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); Y 1 and Y 2 independently from each other are a residue of an organic dye selected from hydrazone dyes of formula wherein Z 1 , Z 2 and Z 3 , independently from each other are —CR 8 — or —NR 9 + —; and at least one of Z 1 , Z 2 or Z 3 is —NR 9 + —; wherein at least one of Y 1 and Y 2 is a residue of an organic dye; R, R 3 , R 4 , R 5 , R 6 , R 7 , R 8 and R 9 independently from each other are hydrogen; hydroxy; C 1 -C 5 alkyl; hydroxy-C 1 -C 5 alkyl; C 1 -C 5 alkoxy; —NO 2 ; —Cl; —Br; —COOH; —SO 3 H; —CN; NH 2 ; or CH 3 —CO—NH—; An 1 , An 2 and An 3 , independently from each other are an anion; a and b independently from each other are a number from 1 to 3; m is a number from 0 to 5000; n is a number from 0 to 5000; and p is a number from 1 to 5000; wherein the sum of m+n+p≧3.