| abstract |
Composition of pigments based on P.Y. 191 of formula (1) ** Formula ** containing 0.05 to 5 mol%, based on the sum of P.Y. 191 and of the other yellow dye, at least one other yellow dye of the formula (2) and / or pigment C.I. yellow 100, ** Formula ** wherein R1, R2, R3 and R4, independently of one another, mean hydrogen, halogen, -CH3, -NO2 or NH-R6, with R6 equal to C1-C4 alkyl; R5 means methyl or carboxyl, and wherein the compound of the formula (2) is different from the pigment C.I. yellow 191. |