Poly(arylene ether) copolymers containing pyridine units as...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing

Reexamination Certificate

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C521S030000, C525S327100, C528S211000

Reexamination Certificate

active

07842734

ABSTRACT:
The subject invention relates to the development and characterization of a new series of poly (arylene ether) copolymers containing pyridine and biphenyl or hydroquinone moieties. Preferred polymers can exhibit very good mechanical properties, high thermal and oxidative stability and high doping ability with strong acids. The invention further relates to the preparation and application of MEA on PEMFC type single cells.

REFERENCES:
patent: WO2008/090412 (2008-07-01), None
International Search Report of Related International Application No. PCT/IB2007/004500 (7 pages).
Written Opinion of Related International Application No. PCT/IB2007/004500 (5 pages).
Pefkianakis et al., “Novel polymer electrolyte membrane, based on pyridine containing poly(ether sulfone),for application in high-temperature fuel cells,” Macromolecular rapid communications, 26 (21), 1724-1728 CODEN: MRCOE3; ISSN:1022-1336, Jan. 1, 2005, XP002495312.
Daletou, M.K. et al., “Proton conducting membranes based on blends of PBI with aromatic polyethers containing pyridine units,” Journal of Membrane Science, Elsevier Scientific Publishing Company, Amsterdam, NL, vol. 252, No. 1-2, Jan. 1, 2003, pp. 115-122, XP009103762, ISSN:0376-7388.
Kerres, J.A., “Development of ionomer membranes for fuel cells,”Journal of Membrane Science, Elsevier Scientific Publishing Company, Amsterdam, NL, vol. 185, Apr. 15, 2001, pp. 3-27, XP002226657, ISSN: 0376-7388.

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