Process to prepare stable trifluorostyrene containing compounds grafted to base polymers using a solvent/water mixture
US7737190B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Mar 24, 2006 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Jan 13, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluorinated ion exchange polymer is prepared by grafting at least one grafting monomer derived from trifluorostyrene on to at least one base polymer in a organic solvent/water mixture. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.