Dispersions Comprising Polythiophenes With A Defined Sulfate Content
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United States of America Patent
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Issued Date -
May 29, 2014
app pub date -
Oct 7, 2011
filing date -
Oct 12, 2010
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Abandoned
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Abstract
The present invention relates to a method for producing a composition comprising polythiophene, comprising the method steps: I) provision of a composition Z1 comprising thiophene monomers and an oxidising agent; II) oxidative polymerisation of the thiophene monomers by reducing the oxidising agent to a reduction product and oxidation of the thiophene monomer, forming a composition Z2 comprising a polythiophene and the reduction product; III) at least partial removal of the reduction product from the composition Z2 obtained in method step II), obtaining a composition Z3; wherein the composition Z3 has a sulfate content in the range from 100 ppm to 1,000 ppm, based on the total weight of the composition Z3. The present invention also relates to a composition obtainable as the composition Z3 produced with this method, a composition comprising a polythiophene, a layer construction, an electronic component and the use of a composition.
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