PROCESS FOR CONVERTING PREMILLED QUINACRIDONE TO PIGMENTARY FORM

摘要

Process for converting premilled quinacridone to pigmentary form by contacting the premilled quinacridone with an aqueous alkaline medium in the presence of at least one surfactant. The process eliminates the need for salt in the premilling operation and eliminates the use of organic liquids in the premilling or aftertreatment of the premilled quinacridone.