Patent ID: 7951901
Filing Date: 2011-05-31
Classification: C08G,C08L

Abstract:
1. A process for the production of electrically conductive poly-3,4-ethylene dioxythiophenes, the process comprising the step of reacting 2,5-dihalogen-3,4-ethylene dioxythiophenes of the Formula (I) wherein Hal means Cl, Br or I, R═C 1 - to C 18 -alkyl optionally substituted with OH or O(CH 2 ) n SO 3 M, where n=3 or 4, M=H, Na or K, and x=0 to 4, with 3,4-ethylene dioxythiophene of the Formula (II) wherein R′ and x′ have the same meaning as R and x in Formula (I), but are selected independently of each other, in a solvent in the absence of an additional oxidizing agent.