Polymer electrolyte fuel-cell separator sealing rubber...

Details Polymer electrolyte fuel-cell separator sealing rubber... Polymer electrolyte fuel-cell separator sealing rubber...

2005-04-05

2005-04-05

Robertson, Jeffrey B. (Department: 1712)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000, C429S129000, C429S247000, C429S249000, C429S254000, 44, C525S100000, C525S106000, C525S477000, C525S478000, C525S479000

Reexamination Certificate

active

06875534

ABSTRACT:
A rubber composition comprising (A) a polyisobutylene polymer having an allyl radical at an end, (B) an optional organpolysiloxane, (C) an organohydrogenpolysiloxane having at least two SiH radicals per molecule, and (D) a platinum group metal catalyst forms a seal member on a periphery of one side of a polymer electrolyte fuel-cell separator. Due to improved acid resistance, weather resistance, creep resistance and gas permeability, the seal member remains effective for a long period of time.

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