Patent ID: 8158030

Claim:
A method for producing an organic solvent dispersion of an intrinsically conductive polymer, which comprises: a deionizing step of deionizing an aqueous colloidal dispersion of an intrinsically conductive polymer by passing the dispersion through a column filled with an ion exchange resin, thereby clearing the intrinsically conductive polymer of cations adhering thereto; a solvent substitution step of substituting water in the aqueous colloidal dispersion with an organic solvent other than N-methylpyrrolidone and dimethylsulfoxide after the deionizing step; and an additive-treating step of adding from 0.01 to 5.00% (W/V), relative to the total volume of the organic solvent dispersion obtained by the solvent substitution step, of N-methylpyrrolidone or dimethylsulfoxide.