NON-AQUEOUS DISPERSIONS OF NAPHTHOL AS PIGMENTS

摘要

A non-aqueous pigment dispersion comprising a Naphthol AS pigment or a mixed crystal thereof and a Naphthrol AS colorant according to Formula (I): Formula (I) wherein R¹, R², R³ ,R⁴ and R⁵ are each independently selected from the group consisting of hydrogen, methyl, ethyl, halogen, methoxy, ethoxy, -CONH-phenyl and -NO2, characterized in that the group Q is phenyl substituted by either one sulphonic acid group, two carboxylic acid groups or salts thereof Non-aqueous inkjet inks and use of the non-aqueous pigment dispersions for making colored layers is also disclosed.