Polythiophene dispersions, their production and their use
AssigneeBayer Aktiengesellschaft
InventorsFriedrich Jonas, Werner Krafft
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Abstract
The invention relates to dispersions of polythiophenes made up of structural units corresponding to the following formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another represent hydrogen or a C.sub.1-4 alkyl group or, together, form an optionally substituted C.sub.1-4 alkylene group, in the presence of polyanions, to the production of these dispersions and to their use for the antistatic treatment of plastic mouldings.
Claims3
A solution of a polythiophene comprising water or a mixture of water with a water-miscible organic solvent as the dispersing medium, a polythiophene made up of structural units of the formula ##STR17## in which R.sub.1 and R.sub.2 each independently is hydrogen or a C.sub.1-4 alkyl group or, together, form an optionally substituted C.sub.1-4 alkylene group, and a polyanion derived from polystyrene sulfonic acid having a molecular weight in the range from 2,000 to 500,000, the polythiophene having been polymerized in the presence of a polyanion of polystyrene sulfonic acid having a molecular weight in the range from 2,000 to 500,000 by oxidative chemical polymerization.
Dependencies are inferred from the claim text.