Idemitsu Kosan Company, Limited

Yosuke Jibiki

Toru Bando

Sumihiro Oda

A polyaniline composite including substituted or unsubstituted polyaniline molecules and a proton donar, the polyaniline molecules being doped with the proton donar, the composite having a chlorine content of 0.6 wt % or less and the composite satisfying the following formula (1):P/P&#x2266;0.15&#x2003;&#x2003;(1)wherein Pis the total sum of the weights of the polyaniline molecules contained in the polyaniline composite having a molecular weight of 10000 or less; and Pis the total sum of the weights of all polyaniline molecules contained in the polyaniline composite.

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Sodegaura, Japan

Yosuke Jibiki