Blue coloring agents based on c.i. pigment blue 80

摘要

The invention relates to a pigment preparation, characterized by a content ofa) a benzimidazolon dioxazine compound of formula (i) as the base pigment andb) a dioxazine compound of general formula (iv) as a pigment dispersant whereinQ is an m - trivalent radical of a compound of formula (iii) is, m is a number from 1 to 4 means.