PRODUCTION OF QUINACRIDONE SOLID SOLUTION

摘要

PROBLEM TO BE SOLVED: To provide a method for directly producing an environmentally benign quinacridone solid solution from its precursor in a single step with simple operation. SOLUTION: This method for directly producing a quinacridone solid solution in a single step comprises cocyclization of at least two kinds of 2,5- dianilinoterephthalic acids each optionally having substituent(s) in a mixed solvent of ethylene glycol and a phenolic compound.