Otsuka Chemical Co., Ltd.

Osamu Shibuta

Tetuo Hasegawa

Masayoshi Suzue

Jun Ogawa

A process for preparing a condensed polyalkoxyphosphazene by reacting a halophosphazene oligomer with an alcohol in the presence of an alkali metal carbonate to produce a condensed partially alkoxy-substituted phosphazene, removing water produced in the reaction from the reaction mixture, and reacting the condensed partially alkoxy-substituted phosphazene with an alkali metal alkoxide. The condensed polyalkoxyphosphazene having desired average molecular weight and viscosity and an excellent stability can be easily prepared in a high yield in a low cost.

Process for preparing condensed polyalkoxyphosphazene

A thermistor using an organophosphazene polymer having aryloxyl and/or alkoxyl group pendants as a thermo-responsive material. The organophosphazene polymer has an excellent responsiveness to temperature change, and can be molded into desired forms. The thermistor having good reliability and good heat and flame resistances can be prepared with good processability and in good yield.

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Tokushima, Japan

Osamu Shibuta