Use of mixed crystals of pigments on the basis of quinacridones in electrophotographic toners or developers, powder lacquers and ink-jet-inks

摘要

The use of mixed crystal quinacridone pigments as colorants in electrophotographic toners and developers, powder lacquers, ink-jet inks, electret fibers and color filters is claimed. The pigments consist of 85-99 wt. % unsubstituted quinacridone (IA) of the beta -phase and 1-15 wt. % substituted quinacridone(s) (IB). The use of mixed crystal quinacridone pigments as colorants in electrophotographic toners and developers, powder lacquers, ink-jet inks, electret fibers and color filters is claimed. The pigments consist of 85-99 wt. % unsubstituted quinacridone (IA) of the beta -phase of formula (I): R1, R2 = hydrogen (H) and 1-15 wt.% substituted quinacridone(s) (IB) of formula (I); R1, R2 independently = chlorine, bromine or fluorine or 1-4 carbon (C) alkyl, 1-4 C alkoxy or carbonamido groups, optionally substituted by 1-6 C alkyl groups; R1 may also = H Independent claims are also included for products, comprising electrophotographic toners and developers, powders and powder lacquers, ink-jet inks and hot-melt ink-jet inks, containing the pigment.