Patent ID: 8623579

Claim:
A solid pigment preparation comprising A) 5% to 99% by weight of an azo pigment of formula (1) (B) 1% to 95% by weight of a copolymer containing the following structural units: (i) 1 to 70 mol % of structural unit B1 (ii) 1 to 70 mol % of structural unit B2 (iii) 1 to 70 mol % of structural unit B3 wherein R 1 , R 3 and R 5 are each independently hydrogen or C 1 -C 4 -alkyl, R 2 is C 1 -C 60 -alkyl, C 6 -C 18 -aryl, C 1 -C 4 -alkylene-C 6 -C 12 -aryl or C 3 -C 18 -hetaryl, R 4 is linear or branched C 1 -C 40 -alkyl, C 6 -C 30 -cycloalkyl, C 1 -C 4 -alkylene-C 6 -C 12 -aryl or C 6 -C 30 -aryl, R 6 is —COO—(CH 2 ) p —, p is between 1 and 8, R 7 , R 8 and R 9 are each independently hydrogen, linear or branched C 1 -C 40 -alkyl, C 5 -C 30 -cycloalkyl, C 6 -C 30 -aryl or benzyl, and n is between zero and 1.