Mixts. of (a) neutral polythiophenes (I) with recurring units of formula (IA) and (b) organic cpds. (II) contg. 2 or more OH and/or COOH gps. or amide or lactam gps., are claimed. In (I), R1,R2 = H or 1-4C alkyl; or R1 + R2 = 1-4C alkylene; pref. methylene, opt. substd. by alkyl; 1,2-ethylene, opt. substd. by 1-12C alkyl or phenyl; or 1,2-cyclohexylene. Also claimed are conductive coatings of these dispersions, tempered to increase their conductivity.