发明公开
EP0312377A2 Method of preparing thin film composite membranes by suspension deposition, and use of such membranes
失效
一种用于通过从悬浮液中沉降，并使用这样的膜制备薄膜复合膜的过程。
- 专利标题： Method of preparing thin film composite membranes by suspension deposition, and use of such membranes
- 专利标题（中）： 一种用于通过从悬浮液中沉降，并使用这样的膜制备薄膜复合膜的过程。
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申请号： EP88309634.9申请日： 1988-10-14
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公开(公告)号： EP0312377A2公开(公告)日： 1989-04-19
- 发明人: Schucker, Robert Charles
- 申请人： EXXON RESEARCH AND ENGINEERING COMPANY
- 申请人地址： P.O.Box 390, 180 Park Avenue Florham Park, New Jersey 07932-0390 US
- 专利权人： EXXON RESEARCH AND ENGINEERING COMPANY
- 当前专利权人： EXXON RESEARCH AND ENGINEERING COMPANY
- 当前专利权人地址： P.O.Box 390, 180 Park Avenue Florham Park, New Jersey 07932-0390 US
- 代理机构： Somers, Harold Arnold
- 优先权： US108819 19871014
- 主分类号： B01D67/00
- IPC分类号： B01D67/00 ; B01D71/54 ; C10G31/11 ; C07C7/144
摘要：
Thin film membranes of polyurea, polyurea-polyurethane alloy, polyurea-polyurea/urethane alloy or polyurea/urethane are prepared by deposition of a thin film of polyurea/urethane on a thick permeable support layer by the technique of preparing a suspension of the polyurea/urethane in a solvent which does not dissolve the thick permeable support layer and permitting the solvent to evaporate and/or permeate through the thick-permeable layer. The resulting composite membranes are useful for the selective separation of aromatic compounds from mixtures of aromatic and non-aromatic compounds.
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