发明授权
- 专利标题： Process for improving semipermeable membranes by treating with protic acids or inorganic salts
- 专利标题（中）： 通过用质子酸或无机盐处理来改善半透膜的方法
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申请号： US17326申请日： 1979-03-05
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公开(公告)号： US4268662A公开(公告)日： 1981-05-19
- 发明人: Takezo Sano , Takatoshi Shimomura , Ichiki Murase
- 申请人： Takezo Sano , Takatoshi Shimomura , Ichiki Murase
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX53-31571 19780317; JPX53-38608 19780331
- 主分类号： B01D
- IPC分类号： B01D20060101 ; B01D71/42 ; C08F6/00 ; C08F20/44 ; C08J20060101 ; C08J7/14
摘要：
A process for improving the performances of semipermeable membranes which comprise an acrylonitrile polymer containing 40 to 100% by mole of acrylonitrile and have a bubble point of more than 0.1 kg/cm.sup.2, by dipping said membranes in an aqueous solution containing inorganic salts and/or protic acids.