Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate
2005-03-22
2005-03-22
Foelak, Morton (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
C210S500270, C210S500410, C521S028000, C521S134000, C525S390000, C525S418000, C525S471000, C525S480000
Reexamination Certificate
active
06869980
ABSTRACT:
The present invention relates to novel polymer blend membranes comprising a functional polymer based on sulfonated aryl polymers, a reinforcing polymer based on aminated or nitrated polyether sulfones and/or polyether ether sulfone and a plasticizer, and also their use as polymer electrolyte membrane in fuel cells, in particular in low-temperature fuel cells.
REFERENCES:
patent: 5082565 (1992-01-01), Haubs et al.
patent: 6194474 (2001-02-01), Kerres et al.
patent: 6300381 (2001-10-01), Kerres et al.
patent: 6509441 (2003-01-01), Kerres
Celanese Ventures GmbH
Hammer III Robert H.
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