FLUOROPOLYMER ION EXCHANGER MEMBRANE HAVING EXCELLENT OXIDATION RESISTANCE AND WIDELY RANGING ION EXCHANGE CAPACITY AND MANUFACTURING METHOD THEREOF

Japanese Patent JP3739713

B2

PROBLEM TO BE SOLVED: To provide an ion exchange membrane which is a fluoropolymer ion exchange membrane that is at a low cost and has a wide ion exchange capacity and is particularly suitable for a fuel cell.
SOLUTION: The fluoropolymer ion exchange membrane has such characteristics that after a specific hydrocarbon based monomer, an acrylic monomer, or a fluoroethylene monomer are cografted with a long-chain branched polytetrafluoroethylene membrane against the fluorine monomer having a halogen group and polymerizable double bond, the halogen group in a cografted chain is made to be a sodium sulfonate group by a solution of sodium sulfite or sodium hydrogen sulfite, and moreover, it is made to be a sulfon acid group, a grafting ratio of the ion exchange membrane is 10-150%, and an ion exchange capacity is 0.3-3.0 meg/g, and a manufacturing method thereof is also provided.

Masaru Yoshida
You Morita
Takeshi Suwa
Asano Masaharu
Nishiyama Souji

JP2002063273A

January 25, 2006

March 08, 2002

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Japan Atomic Energy Research Institute
NITTO DENKO CORPORATION

C08J5/22; B01J39/04; B01J39/20; B01J47/12; C08F8/36; C08F259/08; H01B1/06; H01B13/00; H01M8/02; H01M8/10; (IPC1-7): C08J5/22; B01J39/04; B01J39/20; B01J47/12; C08F8/36; C08F259/08; H01B1/06; H01B13/00; //H01M8/02; H01M8/10

JP50032289A
JP52047589A
JP57085826A
JP2001348439A
JP2003082129A
JP2003234111A

Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shurin Sakurai

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