Polyphenylene-type polymers, preparation method thereof, membranes and fuel cell device comprising said membranes
US7868124B2 · kind B2 · utility
14Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2003 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Jun 16, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to polymers comprising phenylene units, at least one of which bears a phenylene side group substituted with a perfluoro group or chain, which itself bears an —SO3H, —PO3H2 or —CO2H group.Use of this polymer to make fuel cell membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.