Patent ID: 6890977

Claim:
A composition comprising a pigment of the formula in which R 7 , R 8 , R 9 and R 10 independently of one another are hydrogen, halogen, cyano, carbamoyl or C 1 -C 4 alkyl, and from 0.001 to 0.25 parts by weight, per part by weight of the pigment, of a colorant of the formula in which R 1 , R 2 , R 3 and R 4 independently of one another are hydrogen, halogen, R 6 , OR 6 or SR 6 , R 5 is hydrogen or linear or branched C 1 -C 12 alkyl, benzyl or phenethyl, and R 6 is linear or branched C 1 -C 30 alkyl or C 2 -C 30 alkenyl which is unsubstituted or substituted one or more times by halogen or by OC 1 -C 6 alkyl, with the provisos that if R 5 is methyl, there is an alkyl or alkylene chain of at least 6 carbon atoms in R 1 , R 2 , R 3 or R 4 , and if R 5 is hydrogen, R 1 , R 2 , R 3 or R 4 is R 6 , OR 6 or SR 6 and there are at least two alkyl or alkylene chains each of at least 6 carbon atoms or at least one alkyl or alkylene chain of at least 12 carbon atoms, in R 1 , R 2 , R 3 and/or R 4 .