Process for the preparation of polythiophenes by use of ferric salts and alkyl halides
US5204423A · kind A · utility
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2References
8Claims
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Key dates
| Filing date | Jun 21, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Jun 21, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/126
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the preparation of a polymer which is electrically conductive and which is based on polythiophene, the process including polymerizing thiophene in a reaction medium including thiophene, from 2.5 to 20 moles of an anhydrous ferric salt per mole of thiophene, from 0.04 to 1 liter of an alkyl halide per gram of thiophene, and from 0.1 to 5% by weight of water introduced into the reaction medium based on the amount of alkyl halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.