Title:
TRIFLUOROSTYRENE CONTAINING COMPOUNDS GRAFTED TO BASE POLYMERS
Document Type and Number:
WIPO Patent Application WO2005049204
Kind Code:
A3
Abstract:
A fluorinated ion exchange polymer prepared by grafting a monomer on to a base polymer, wherein the grafting monomer is selected from the group consisting of structure 1a, structure 1b and mixtures thereof, (INSERT 1a and 1b HERE) wherein Y is selected from the group consisting of -RFSO2F (sulfonyl fluoride), -RFSO3M (fluorosulfonic acid or salt), RFSO2NH2 (fluorosulfonamide), and -RFSO2N(M)SO2R<2>F (imide); wherein M is H, an alkali cation, or ammonium; and RF and R<2>F groups 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 in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.
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Inventors:
CHOUDHURY BISWAJIT (CA)
ROELOFS MARK GERRIT (US)
YANG ZHEN-YU (US)
ROELOFS MARK GERRIT (US)
YANG ZHEN-YU (US)
Application Number:
PCT/US2004/020704
Publication Date:
December 15, 2005
Filing Date:
June 25, 2004
Export Citation:
Assignee:
DU PONT (US)
CHOUDHURY BISWAJIT (CA)
ROELOFS MARK GERRIT (US)
YANG ZHEN-YU (US)
CHOUDHURY BISWAJIT (CA)
ROELOFS MARK GERRIT (US)
YANG ZHEN-YU (US)
International Classes:
C08F255/02; C08F259/08; C08F291/18; H01M10/05; H01M10/0565; (IPC1-7): C08F291/00; C08F291/18; B01D71/28; B01D71/78; C08F259/08; C08F255/02
Domestic Patent References:
WO2001058576A1 | 2001-08-16 | |||
WO2003018654A1 | 2003-03-06 | |||
WO2004026929A1 | 2004-04-01 | |||
WO2003006515A1 | 2003-01-23 |
Foreign References:
US6359019B1 | 2002-03-19 | |||
US4113922A | 1978-09-12 | |||
US20020137806A1 | 2002-09-26 | |||
US4169023A | 1979-09-25 | |||
US4384941A | 1983-05-24 | |||
US4481306A | 1984-11-06 | |||
US4396727A | 1983-08-02 | |||
US5536754A | 1996-07-16 |
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