| 摘要 |
PROBLEM TO BE SOLVED: To provide a phenylenediamine derivative hydrochloride used for production of polybenzazole which is moldable into fibers and films having high strength, high modulus and high heat resistance and excellent in long-term storage stability. SOLUTION: This phenylenediamine derivative hydrochloride is characterized in that the compound is represented by general formula (1) or/and general formula (2) (wherein Zs represent either one of O, S and N and may be different from or the same as each other; n is the same as the number of NH2 groups) and the water content is <=2,000.
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