Crosslinked sulfonated polyimide films

Details Crosslinked sulfonated polyimide films Crosslinked sulfonated polyimide films

2007-01-02

2007-01-02

Peng, Kuo-Liang (Department: 1712)

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

Synthetic resins

From sulfur-containing reactant

C528S288000, C528S293000

Reexamination Certificate

active

10486883

ABSTRACT:
The present invention relates to a new sulfonated polyimides, more specifically to new methods for preparing the polyimides, and cation exchange membranes containing the polyimides. The sulfonated polyimides of the presented invention have excellent proton conductivity and low preparation cost. In particular, the sulfonated polyimides can be used as polymer electrolyte membrane in hydrogen or direct methanol fuel cell for electric vehicles and portable power sources operated with electric energy

REFERENCES:
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patent: 5153303 (1992-10-01), Jasne
patent: 5317082 (1994-05-01), Beuhler
patent: 5449742 (1995-09-01), Beuhler
patent: 5585217 (1996-12-01), Oba
patent: 6245881 (2001-06-01), Faure
patent: 0300326 (1989-01-01), None

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