Thiophenes and polymers derived therefrom
US7094865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Mar 8, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thiophene compound represented by formula (I):in which:A represents a C2–C5 alkylene bridge; R represents a stereoselectively substituted, linear or branched C2–C24 alkyl, C3–C18 cycloalkyl, C1–C18 alkoxy or polyethyleneoxide group, optionally substituted with at least one substituent selected from the group consisting of an alcohol, amide, ether, ester or sulfonate group; or an optionally substituted aryl group having at least one chiral center substituted at said C2–C5 alkylene bridge; polymers derived therefrom; a process for polymerizing a thiophene according to formula (I), optionally chemically or electrochemically; and dispersions, pastes and layers containing polymers derived therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.