| abstract |
Compositions containing at least 3 diketopyrrolopyrroles of the formulas <IMAGE> in which A is a group <IMAGE> and B are a group <IMAGE>, R1 is C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylthio, halogen or phenyl, R2 is a group COX, in which X is NR4R5 or a heterocyclic radical containing at least 2 N atoms, where one N atom forms an amide with the carbonyl group, R3 is hydrogen, halogen or C1-C6-alkyl. For the meaning of R4 and R5, reference is made to claim 1. By adding such a composition to diketopyrrolopyrrole pigments, the rheological behavior of the latter and the sheen of the colorations produced with it are improved to an unexpected extent. |