ELECTROLYTIC MEMBRANE COMPRISING FLUORINE-CONTAINING POLYMER ION EXCHANGE MEMBRANE AND USED FOR FUEL BATTERY

Title:

ELECTROLYTIC MEMBRANE COMPRISING FLUORINE-CONTAINING POLYMER ION EXCHANGE MEMBRANE AND USED FOR FUEL BATTERY

Document Type and Number:

Japanese Patent JP2004051685

Kind Code:

A

Abstract:

To solve problems such as a small ion exchange quantity which is the maximum defect of a fluoropolymer ion exchange membrane, an insufficient water-retaining property, and a low oxidation-resistant property which is the maximum defect of a hydrocarbon monomer-grafted fluoro ion exchange membrane.

This fluoropolymer ion exchange membrane produced by subjecting a fluoropolymer as a substrate to a radiation graft copolymerization using a fluoromonomer having a functional group such as a halogen group, converting the halogen groups or the like in the graft chains into sulfonate groups in a sulfite or bisulfite solution or the like, and further converting the sulfonate groups into sulfonic groups. The fluoropolymer ion exchange membrane preferably has a graft rate of 10 to 150% and an ion exchange quantity of 0.3 to 3.0 meq/g. A method for producing the fluoropolymer ion exchange membrane is provided.

Inventors:

YOSHIDA MASARU
MORITA YOSUKE
SUWA TAKESHI
MURAKAMI TOMOYUKI
NISHIYAMA SOJI
WANO TAKASHI

Application Number:

JP2002207865A

Publication Date:

February 19, 2004

Filing Date:

July 17, 2002

Export Citation:

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Assignee:

JAPAN ATOMIC ENERGY RES INST
NITTO DENKO CORP

International Classes:

C08J5/22; C08F8/36; C08F259/08; H01M8/02; H01M8/10; (IPC1-7): C08J5/22; C08F8/36; C08F259/08

Attorney, Agent or Firm:

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

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