PHENYLENEDIAMINE DERIVATIVE

摘要

PROBLEM TO BE SOLVED: To provide a phenylenediamine derivative having a particle diameter distribution suitable for the production of PBZ polymers which can be formed into fibers and films having high strengths and high heat resistance. SOLUTION: This phenylenediamine derivative is capable of being used as a raw material for PBZ polymers, and characterized by having a particle size distribution having a median diameter of 10 to 400μm measured with a laser diffraction type particle size measurer.