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OwnerSundeep Kumar Dhawan, Subhas Chandra +5inventors
InventorsSundeep Kumar Dhawan, Subhas Chandra, Erode Subramanium Raja Gopal, Navjot Singh, David Ernest Rodrigues, Michael Leslie Todt, James Ross Fishburn
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Doped polyanilines are prepared by contacting aniline with an oxidizing agent such as ammonium peroxydisulfate in aqueous solution at a temperature of at most about 10° C. in the presence of at least one organic sulfonic acid, preferably an alkylbenzenesulfonic acid such as dodecylbenzenesulfonic acid. The products may be blended with thermoplastic resins such as polystyrene to produce blends having excellent static discharge properties
A method for preparing an electrically conductive polyaniline which comprises contacting aniline with an oxidizing agent in aqueous solution at a temperature of at most about 10° C. in the presence of at least one organic sulfonic acid.
A method for preparing an electrically conductive polyaniline which comprises contacting aniline with ammonium peroxydisulfate in aqueous solution at a temperature in the range of about 0-10° C. in the presence of at least one alkylbenzenesulfonic acid, the molar ratio of said ammonium peroxydisulfate to said aniline being in the range of about 1.0-1.2:1 and the sulfonic acid being present in the amount of about 5-10 ml per gram of aniline.
A method of isolating polyaniline doped with at least one organic sulfonic acid which comprises precipitating said doped polyaniline from aqueous solution by combination with a mixture of water and a C1-4 water-miscible alkanol and separating the precipitated polyaniline from said solution.
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