Trifluorostyrene containing compounds, and their use in polymer electrolyte membranes
- Kingston, CA
- Hockessin, DE
A fluorinated ion exchange polymer is prepared by grafting a monomer onto a base polymer, wherein the grafting monomer is selected from the group consisting of structure 1a, 1b and mixture thereof; ##STR00001## wherein Y is selected from the group consisting of --R.sub.FSO.sub.2F, --R.sub.FSO.sub.3M, --R.sub.SO.sub.2NH.sub.2 and --R.sub.FSO.sub.2N(M)SO.sub.2R.sup.2.sub.F, where in M is hydrogen, an alkali cation or ammonium; and R.sub.F and R.sup.2.sub.F are perfluorinated or partially fluorinated, and may optionally include ether oxygens; and n is between 1 and 2 for 1a, or n is between 1 and 3 for 1b. These ion exchange polymers are useful is preparing catalyst coated membranes and membrane electrode assemblies for fuel cells.
- Research Organization:
- E.I. du Pont de Nemours and Company
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC36-99GO10337
- Assignee:
- E.I. du Pont de Nemours and Company (Wilmington, DE)
- Patent Number(s):
- 7,563,532
- Application Number:
- 10/570,024
- OSTI ID:
- 1012605
- Country of Publication:
- United States
- Language:
- English
Palladium-catalyzed cross-coupling of perfluoroalkenylzinc reagents with aryl iodides. A new, simple synthesis of .alpha.,.beta.,.beta.-trifluorostyrenes and the stereoselective preparation of 1-arylperfluoropropenes
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journal | June 1988 |
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