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US 2011/0213103 A1Published application
Crosslinkable sulfonated copolymer and fuel cell including polymeric composition of the same
AssigneeSamsung SDI Co., Ltd.
InventorsJae-Jun Lee, Do-yun Kim, Sang-kook Mah
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Abstract
A sulfonated copolymer including a crosslinking functional group and a fuel cell including a polymer 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.
Claims7
A method of preparing a crosslinkable sulfonated copolymer comprising:
- condensation polymerization of at least one aromatic diol-, dinitro-, or dihalide-based monomer with an aromatic diol-, dinitro-, or dihalide-based monomer containing a sulfonic acid group or a sulfonate group;
- preparing sulfonated polyarylene ether having a hydroxyl group at ends thereof by adding the hydroxyl group at both ends of the result of the condensation polymerization;
- covalently bonding the hydroxyl group at the ends of the sulfonated polyarylene ether with a crosslinking derivative.
Dependencies are inferred from the claim text.