Azo pigment formulations

摘要

Intense azo pigment formulations which have good flow and are readily dispersible are obtained on adding a long-chain aliphatic primary amine and a diamine of the formula H2N-A-NH2 in which A is an aliphatic hydrocarbon radical having 6 to 30 C atoms, before, during or preferably after the coupling. The formulations are in particular suitable for intaglio printing inks which produce glossy prints which do not even strike through thin papers.