发明名称 |
PROCESS FOR PREPARING REVERSE-OSMOSIS MEMBRANES |
摘要 |
<p>The present invention relates to a process for preparing polypiperazinamide-based reverse-osmosis membranes comprising the following succession of steps: a) preparing a solution of polypiperazinamide in a polar organic solvent; b) applying the solution on a planar support so as to form a planar body; c) evaporating the solvent under the action of a flow of air; d) gelifying the planar body by phase reversal by passing through a coagulation bath; e) washing the membrane to extract the solvent contained therein. The invention allows to obtain reverse-osmosis membranes with high flow and high mechanical characteristics.</p> |
申请公布号 |
EP0357864(B1) |
申请公布日期 |
1993.10.06 |
申请号 |
EP19890103490 |
申请日期 |
1989.02.28 |
申请人 |
SEPAREM S.P.A. |
发明人 |
DRIOLI, ENRICO;GAETA, SOCCORSO;SOGLIANO, MARCO |
分类号 |
B01D;B01D67/00;B01D71/56;B01D71/62;C08J5/18 |
主分类号 |
B01D |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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