发明名称 |
SEMI-PERMEABLE ENCAPSULATED MEMBRANES, PROCESS FOR THEIR PRODUCTION AND THEIR USE |
摘要 |
Semipermeable membranes of a porous polymeric substrate whose external and all internal surfaces (pores) are encapsulated by a semipermeable thin film of a hydrophilic polymer are provided. The encapsulating film consists of at least one layer of said polymer which is cross-linked/stabilized by polyfunctional compounds containing at least two functional (reactive) groups. The membrane substrate is optionally pretreated-before the encapsulation step-with polyfunctional compounds. The new membranes can be used in ultrafiltration and reverse osmosis processes. They are solvent-, pressure- and temperature-resistant and show good separation capacities, e.g. for separating organic compounds from salt solutions. |
申请公布号 |
DE3379160(D1) |
申请公布日期 |
1989.03.16 |
申请号 |
DE19833379160 |
申请日期 |
1983.12.10 |
申请人 |
ALIGENA AG |
发明人 |
LINDER, CHARLES, DR.;MORDECHAI, PERRY, DR.;GERSHON, AVIV, DR.;REUVEN, KOTRARO |
分类号 |
B01D67/00;B01D69/12;B01D71/60;(IPC1-7):B01D13/04 |
主分类号 |
B01D67/00 |
代理机构 |
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