Crosslinkable sulfonated copolymer and fuel cell including...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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Details

C525S330900, C525S328500, C525S331800, C528S150000, C528S373000, C528S378000, C528S391000

Reexamination Certificate

active

07964676

ABSTRACT:
A sulfonated copolymer including a crosslinking functional group and a fuel cell including a polymeric composition of the same are provided. The sulfonated copolymer including a crosslinking functional group can remarkably reduce methanol crossover and maintain superior dimensional stability and ionic conductivity by reducing swelling.

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