Proton conductive membrane having improved thermal stability

Details Proton conductive membrane having improved thermal stability Proton conductive membrane having improved thermal stability

2006-02-21

2006-02-21

Lipman, Bernard (Department: 1713)

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

Synthetic resins

Ion-exchange polymer or process of preparing

C521S030000, C521S031000, C429S006000, C429S047000

Reexamination Certificate

active

07001929

ABSTRACT:
The invention provides a proton conductive membrane excellent in heat resistance, which has sulfonic acid as ion exchange groups. The proton conductive membrane comprises a nitrogen-containing compound that can be mixed with water in arbitrary proportions and has a boiling point of not lower than 100. degree. C. and a proton conductive resin which has sulfonic acid ion-exchange groups, wherein the nitrogen-containing compound is contained in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the proton conductive resin.

REFERENCES:
patent: 2002/0155340 (2002-10-01), Nanaumi et al.
patent: 2002/0164513 (2002-11-01), Asano et al.
patent: 2002/0172850 (2002-11-01), Asano et al.
patent: 2003/0173547 (2003-09-01), Yamakawa et al.
patent: 2003/0219532 (2003-11-01), Kanaoka et al.
patent: 2004/0121211 (2004-06-01), Asano et al.

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