发明授权
- 专利标题： Process for producing semipermeable membrane
- 专利标题（中）： 半透膜生产工艺
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申请号： US696483申请日： 1985-01-30
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公开(公告)号： US4548769A公开(公告)日： 1985-10-22
- 发明人: Takatoshi Shimomura , Fumio Fujita , Manabu Hirakawa
- 申请人： Takatoshi Shimomura , Fumio Fujita , Manabu Hirakawa
- 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： JPX57-20316 19820210; JPX57-21633 19820212
- 主分类号： B01D71/42
- IPC分类号： B01D71/42 ; C08F8/12 ; C08L33/20 ; C08J9/36
摘要：
A process for producing a semipermeable membrane having a high flux, excellent in solute rejection and useful for reverse osmosis, ultrafiltration and the like which comprises dipping a semipermeable membrane of acrylonitrile polymer containing 40-100% by mole of acrylonitrile in a solution of an amine and/or an alkali, or casting a solution of said polymer containing an amine and/or an alkali to prepare a semipermeable membrane, and optionally, treating the semipermeable membrane thus obtained with plasma.
公开/授权文献
- US5239489A Pen position and tilt estimators for a digitizer tablet 公开/授权日：1993-08-24