发明授权
- 专利标题: Cation-exchange membrane for electrolyzing alkali metal halide
- 专利标题(中): 用于电解碱金属卤化物的阳离子交换膜
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申请号: US373717申请日: 1982-04-30
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公开(公告)号: US4431504A公开(公告)日: 1984-02-14
- 发明人: Toru Seita , Takao Satoh , Mitsuo Kikuchi
- 申请人: Toru Seita , Takao Satoh , Mitsuo Kikuchi
- 申请人地址: JPX Shinnanyo
- 专利权人: Toyo Soda Manufacturing Co., Ltd.
- 当前专利权人: Toyo Soda Manufacturing Co., Ltd.
- 当前专利权人地址: JPX Shinnanyo
- 优先权: JPX54-149584 19791120
- 主分类号: C25B13/08
- IPC分类号: C25B13/08 ; B01J47/12 ; C08J5/22 ; C25B1/46
摘要:
A cation-exchange membrane for electrolyzing an aqueous solution of an alkali metal halide in the manufacture of an alkali hydroxide and a halogen. The membrane comprises one layer which occupies 5 to 30% of the total thickness of the membrane and has carboxylic acid groups; another layer which occupies 5 to 30% of the membrane thickness and has weakly acidic groups, the weakly acidic groups occupying 10 to 60% of the total exchange group capacity of the layer; and a further layer which has sulfonic acid groups occupying the middle portion of the membrane.
公开/授权文献
- US5552864A Magnetic seal with tapered shunts 公开/授权日:1996-09-03