Patent ID: 7087677

Claim:
Copolymer particles of a copolymer dye composition, comprising at least one dye monomer, wherein the dye monomer is of the general formula (I) wherein R 1 is C 3-6 alkylene, C 3-6 alkoxylene, C 3-10 arylene, (C 3-10 ) aryl-(C 1-6 ) alkylene or (C 1-6 ) alkyl-(C 6-10 ) arylene, the alkylene and/or arylene radicals optionally being substituted by hydroxyl, C 1-6 alkoxyl, C 6-10 aryloxy or halogen, X is oxygen or NR′ with R′ being C 1-6 alkyl, C 6-10 aryl, (C 6-10 ) aryl-(C 1-6 ) alkyl or (C 1-6 ) alkyl-(C 6-10 ) aryl, the alkyl and/or aryl radicals optionally being substituted by hydroxyl, C 1-6 alkoxyl, C 6-10 aryloxy or halogen, R is selected from the group comprising an acrylate moiety or a methacrylate moiety and derivatives thereof, A is a fused heterocyclic ring system of the general formula (IV) wherein R 3 is hydrogen, halogen, NR 4 R 5 , R 5 O or R 5 S, in which R 4 is hydrogen, C 1-6 alkyl, C 6-10 aryl, (C 6-10 ) aryl-(C 1-6 ) alkyl or (C 1-6 ) alkyl-(C 6-10 ) aryl, the alkyl and/or aryl radicals optionally are substituted by hydroxyl, C 1-6 alkoxyl, C 6-10 aryloxy or halogen; R 5 is C 1-6 alkyl, C 6-10 aryl, (C 6-10 ) aryl-(C 1-6 ) alkyl or (C 1-6 ) alkyl-(C 6-10 ) aryl, the alkyl and/or aryl radicals optionally are substituted by hydroxyl, C 1-6 alkoxyl, C 6-10 aryloxy or halogen; and Y is sulphur, oxygen or NR 4 , in which R 4 has the meaning given above, copolymerized with at least one copolymerizable monomer.