发明授权
- 专利标题: Process for producing semipermeable membranes
- 专利标题(中): 半透膜生产工艺
-
申请号: US973633申请日: 1978-12-27
-
公开(公告)号: US4265959A公开(公告)日: 1981-05-05
- 发明人: Takezo Sano , Takatoshi Shimomura , Ichiki Murase , Manabu Hirakawa
- 申请人: Takezo Sano , Takatoshi Shimomura , Ichiki Murase , 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: JPX52/159377 19771228; JPX53/5419 19780121
- 主分类号: B01D71/42
- IPC分类号: B01D71/42 ; C08J5/22 ; C08J7/14 ; D06M11/55 ; B32B7/02 ; B01D39/16
摘要:
A method for the preparation of semipermeable membranes which comprises sulfonating porous membranes of acrylonitrile polymers containing acrylonitrile in an amount of 40% to 100% by mole.The resulting semipermeable membrane is very useful for separating substances by reverse osmosis or ultrafiltration.
公开/授权文献
- US5946819A Continuous textile web dryer 公开/授权日:1999-09-07