Electrically conductive blends of intrinsically conductive polymers and thermoplastic polymers and a process for their preparation
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United States of America Patent
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Mar 1, 1994
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N/A
app pub date -
Jun 22, 1993
filing date -
Oct 8, 1991
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Abstract
A process for preparing a conductive polymer article comprises the steps of preparing a dispersible neutral intrinsically conductive polymer; dispersing the intrinsically conductive polymer in a thermoplastic polymer to form a blend; processing the blend into the shape of the desired article; and, contacting the processed article with a dopant solution capable of both swelling the thermoplastic polymer and doping the intrinsically conductive polymer. A process for preparing neutral polyaniline comprises the steps of neutralizing doped polyaniline with a sodium carbonate solution and washing the polyaniline with a polyethyleneglycol solution. A conductive polymer article comprises a blend of an intrinsically conductive polymer and a thermoplastic polymer which is subsequently doped. A conductive polymer blend according to the invention, includes polyaniline, or insulating thermoplastic material and carbon black.
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