METHOD OF PRODUCING HALOGENATED QUINACRIDONE

摘要

PROBLEM TO BE SOLVED: To provide a novel method of producing a halogenated quinacridone which is safe and excellent in productivity, a halogenated quinacridone and a colored composition of the halogenated quinacridone which has a wide range of the color tone and is dispersed finely.SOLUTION: A method of producing a halogenated quinacridone comprises halogenating quinacridone with a halogenation agent consisting of one or more N-halo-imide compounds selected from trichloroisocyanuric acid, dichloroisocyanuric acid metal salts tribromoisocyanuric acid and dibromoisocyanuric acid metal salts. A colored composition using a halogenated quinacridone obtained by the production method is also provided.