Title:
SULFONIMIDE CONTAINING COMPOUNDS AND THEIR USE IN POLYMER ELECTROLYTE MEMBRANES FOR ELECTROCHEMICAL CELLS
Document Type and Number:
WIPO Patent Application WO2005003081
Kind Code:
A3
Abstract:
A compound having the general structure (I), wherein A¿1< is a monovalent, divalent, or trivalent aromatic heterocyclic group comprising heterocyclic rings; R¿1?, R¿2?, and R¿3? are divalent fluorinated groups; m, n, and p are 0 to 3, with the proviso that m + n + p is equal to 1, 2, or 3 so that the carbon atoms of the heterocyclic rings are fully substituted by acidic fluorinated sulfonyl-containing groups; q is 0 or 1; Y¿1? is -OH, -NH-SO?2#191-R¿4? wherein R¿4? is a monovalent fluorinated group, -NH-, -NH-SO?2#191-R¿5?-SO?2#191-NH-, or -NH-SO?2#191-R¿6?-A¿2?-R¿7?-SO?2#191-NH-, wherein A¿2? is a divalent heterocyclic group and R¿5?, R¿6?, and R¿7? are divalent fluorinated groups; and Y¿2? and Y¿3? are -OH or -NH-SO?2#191-R¿4?; with the proviso that when m and n are each equal to 1, p is 0 to 1, and q is 0, Y¿1? is selected from the group consisting of -NH-, -NH-SO?2#191-R¿5?-SO?2#191-NH-, and -NH-SO?2#191-R¿6?-A¿2?-R¿7?-SO?2#191-NH-. By compound is meant either a small molecule or a repeat unit of a polymer. The invention also provides a solid polymer electrolyte membrane, a membrane electrode assembly, a gas diffusion electrode, an electrocatalyst coating composition, and a fuel cell.
Inventors:
TEASLEY MARK F (US)
Application Number:
PCT/US2004/020705
Publication Date:
June 16, 2005
Filing Date:
June 25, 2004
Export Citation:
Assignee:
DU PONT (US)
TEASLEY MARK F (US)
TEASLEY MARK F (US)
International Classes:
C07D235/10; C07D271/10; H01M8/10; H01M10/0565; (IPC1-7): C07D271/10; C07D235/10; C08G75/20
Domestic Patent References:
| WO2001001506A1 | 2001-01-04 | |||
| WO1996039379A1 | 1996-12-12 |
Foreign References:
| US6176984B1 | 2001-01-23 |
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