Patent ID: 6312512
Filing Date: 2001-11-06
Classification: C09B,C09D

Abstract:
A quinacridone mixed crystal pigment consisting ofa) from 82.5 to 99% by weight of unsubstituted .gamma.-phase quinacridone of the formula (I) ##STR8##in which R.sup.1 and R.sup.2 are hydrogen atoms andb) from 1 to 17.5% by weight of one or more 2,9- or 3,10-substituted quinacridones, or of a combination thereof, of the formula (I) in which the substituents R.sup.1 and R.sup.2 are identical or different and are chlorine, bromine or fluorine atoms or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or carboxamido groups which can be substituted by C.sub.1 -C.sub.6 -alkyl groups, and R.sup.1 can additionally be a hydrogen atom.