Dispersible polymer powders
AssigneeH. C. Starck GmbH
InventorsBernhard Wessling, Stephan Kirchmeyer, Dietrich Gehrmann
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Abstract
Disclosed herein is a water-dispersible powder consisting essentially of polymers T comprising recurring thiophene units and at least one further polyanionic polymer P and process for preparing and using the same.
Claims9
A process for preparing water-dispersible powders consisting essentially of polymers T comprising recurring thiophene units and at least one further polyanionic polymer P, the process comprising admixing a dispersion or solution containing polymers T and at least one further polyanionic polymer P with a salt, continuing the addition of the salt until the polymers precipitate and subsequently isolating and drying the latter.
A process for preparing water-dispersible powders consisting essentially of polymers T comprising recurring thiophene units and at least one further polyanionic polymer P, the process comprising admixing a dispersion or solution containing polymers T and at least one further polyanionic polymer P with a compound which forms an azeotrope with water, removing the water by azeotropic distillation and obtaining the polymer by isolating and drying.
Dependencies are inferred from the claim text.