Process for producing functionalized polythiophenes
US10767003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2015 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jul 16, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a process for producing a liquid composition comprising a functionalized π-conjugated polythiophenes, comprising the process steps of i) providing a liquid phase comprising a) thiophene monomers of the general formula (I) wherein X,Y are identical or different and are O, S, or NR1, wherein R1 is hydrogen or an aliphatic or aromatic residue having 1 to 18 carbon atoms; A is organic residue carrying an anionic functional group; b) an oxidizing agent; and c) a solvent; ii) oxidatively polymerizing the thiophene monomers of the general formula (I) to obtain a liquid composition comprising functionalized π-conjugated polythiophenes; wherein (α1) the pH of the liquid phase provided in process step i) is adjusted to a value below 7.0, wherein the pH is determined at a temperature of 20° C.; and (α2) the chloride content of the liquid phase provided in process step i) is less than 10000 ppm, based on the total weight of the liquid phase. The present invention also relates to the liquid composition obtainable by this process, to a liquid composition comprising a functionalized π-conjugated polythiophene, wherein the com-position is characterized by a certain…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.