Compositions – Electrically conductive or emissive compositions
Reexamination Certificate
2007-05-01
2007-05-01
Kopec, Mark (Department: 1751)
Compositions
Electrically conductive or emissive compositions
C528S363000, C528S073000, C528S183000, C528S229000, C528S423000, C528S170000, C429S006000
Reexamination Certificate
active
10768151
ABSTRACT:
Disclosed are a polymer electrolyte having improved hot water resistance and radical resistance, a proton conductive membrane comprising the polymer electrolyte, and a membrane-electrode assembly including the proton conductive membrane.The polymer electrolyte comprises at least one polymer selected from polyether, polyketone, polyetherketone, polysulfone, polyethersulfone, polyimide, polyetherimide, polybenzimidazole, polybenzothiazole, polybenzoxazole and the like. The polymer comprises a repeating structural unit with either or both of an aromatic ring and a heterocyclic ring, and a repeating structural unit represented by the formula (1):wherein X is a single bond, an electron-withdrawing group or an electron-donating group; R is a single bond, —(CH2)q— or —(CF2)q— where q ranges from 1 to 10; m is from 0 to 10; k is from 0 to 5; l is from 0 to 4; and k+1≧1.
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(C) Derwent Publications; 2002-316330; Univ. Shanghai Jiaotong.
(C) Derwent; 1978-28042A; Teijin Ltd.
Iguchi Masaru
Kanaoka Nagayuki
Mitsuta Naoki
Otsuki Toshihiro
Soma Hiroshi
Arent & Fox LLP
Honda Motor Co. Ltd.
JSR Corporation
Kopec Mark
Thomas Jaison
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