Patent ID: 6194540
Filing Date: 2001-02-27
Classification: C08G,H01B

Abstract:
A method for the production of a water-soluble conducting polyaniline, characterized by adding dropwise a sulfonating agent at a rate in the range of 0.5 to 8 kg/hr of unit time to 1 kg of a polyaniline or a derivative thereof having a water content in the range of 0 to 8 wt. % and meanwhile stirring the mixture consequently formed at an initial power in the range of 0.03 to 0.3 kW/m.sup.3 thereby sulfonating said polyaniline or said derivative and subsequently hydrolyzing the product of sulfonation, wherein said hydrolysis is carried out in a mixed solution of water with a hydrophilic organic solvent, with the concentration of said product of sulfonation of said polyaniline or said derivative thereof fallino in the range of 0.1 to 30 wt. %, at a temperature in the range of 40 to 120.degree. C.