Stable trifluorostyrene containing compounds grafted to base...

Details Stable trifluorostyrene containing compounds grafted to base... Stable trifluorostyrene containing compounds grafted to base...

2004-06-25

2010-11-09

Mulcahy, Peter D. (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

C521S028000, C521S032000, C521S033000, C525S276000

Reexamination Certificate

active

07829603

ABSTRACT:
A fluorinated ion exchange polymer prepared by grafting at least one grafting monomer on to at least one base polymer, wherein the grafting monomer comprises structure 1a or 1b: wherein Z comprises S, SO2, or POR wherein R comprises a linear or branched perfluoroalkyl group of 1 to 14 carbon atoms optionally containing oxygen or chlorine, an alkyl group of 1 to 8 carbon atoms, an aryl group of 6 to 12 carbon atoms or a substituted aryl group of 6 to 12 carbon atoms; RF comprises a linear or branched perfluoroalkene group of 1 to 20 carbon atoms, optionally containing oxygen or chlorine; Q is chosen from F, —OM, NH2, —N(M)SO2R2F, and C(M)(SO2R2F)2, wherein M comprises H, an alkali cation, or ammonium; R2Fgroups comprises alkyl of 1 to 14 carbon atoms which may optionally include ether oxygens or aryl of 6 to 12 carbon atoms where the alkyl or aryl groups may be perfluorinated or partially fluorinated; and n is 1 or 2 for 1a, and n is 1, 2, or 3 for 1b. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.

REFERENCES:
patent: 4113922 (1978-09-01), D'Agostino et al.
patent: 4169023 (1979-09-01), Sata et al.
patent: 4384941 (1983-05-01), Okamoto et al.
patent: 4396727 (1983-08-01), Ishigaki et al.
patent: 4481306 (1984-11-01), Markus et al.
patent: 5536754 (1996-07-01), Feiring
patent: 6150426 (2000-11-01), Curtin et al.
patent: 6359019 (2002-03-01), Stone et al.
patent: 6607856 (2003-08-01), Suzuki et al.
patent: 6723758 (2004-04-01), Stone et al.
patent: 6828386 (2004-12-01), MacKinnon
patent: 7563532 (2009-07-01), Choudhury et al.
patent: 2002/0137806 (2002-09-01), Stone et al.
patent: 2006/0135715 (2006-06-01), Yang
patent: 2006/0264576 (2006-11-01), Roelofs et al.
patent: 2006/0276555 (2006-12-01), Roelofs et al.
patent: 2006/0276556 (2006-12-01), Roelofs et al.
patent: 2008/0032184 (2008-02-01), Yang et al.
patent: 2008/0206624 (2008-08-01), Choudhury et al.
patent: 1346707 (2002-05-01), None
patent: 1349962 (2002-05-01), None
patent: WO 01/58576 (2001-08-01), None
patent: WO-01/58576 (2001-08-01), None
patent: WO 03/006515 (2003-01-01), None
patent: WO 03/018654 (2003-03-01), None
patent: WO-03/018654 (2003-03-01), None
patent: WO 2004/026929 (2004-04-01), None
patent: 2005/003083 (2005-01-01), None
patent: WO 2005/049204 (2005-06-01), None
patent: WO 2005/113491 (2005-12-01), None
patent: 2006/102671 (2006-09-01), None
patent: WO 2006/102670 (2006-09-01), None
patent: WO 2006/102671 (2006-09-01), None
patent: WO 2006/102672 (2006-09-01), None
Feiring et al., Journal of Fluorine Chemistry, vol. 105, pp. 129-135 (2000).
Y. Sone et. al., New Additives to Improve the First-Cycle Charge-Discharge Performance of a Graphic Anode for Lithium-Ion Cells, Journal of the Electrochemical Society, 2005, 152(10), A1996-A2001.

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