Patent ID: 8920678
Filing Date: 2014-12-30
Classification: C08G,C08J,C08L,H01B,Y10T

Abstract:
1. A method for making a dispersion comprising at least one conducting polymer the method comprising: (a) combining water, at least one thiophene and at least one polymeric carboxylic acid, (b) introducing at least one oxidant to form a reaction mixture, (c) polymerizing the reaction mixture at a temperature of less than 50° C. while stirring the reaction mixture; (d) filtering the reaction mixture, and (e) recovering the dispersion; wherein the method is conducted for a time sufficient to generate particles having a particle size of less than 200 nm, wherein a film drop cast from the dispersion has a conductivity from 10 wherein the dispersion comprises less than 1 ppm of metal ions and less than 1 ppm of anions of inorganic acids, and wherein the stirring is shear mixing from 5,000 rpm to 24,000 rpm.