发明名称 |
SEMIPERMEABLE COMPOSITE MEMBRANE AND PROCESS FOR PREPARATION THEREOF |
摘要 |
<p>A semipermeable composite membrane comprising a thin semipermeable film of a polymeric material deposited on one side of the microporous substrate, said polymeric material being prepared by interfacial crosslinking of a polymer containing a recurring unit of the formula (I) wherein each of R1 and R2 represents a hydrogen atom or a methyl group, and W1 represents a direct bonding or a sulfonyl group (-SO2-), with a polyfunctional compound containing at least two functional groups selected from acid halide, sulfonyl halide, isocyanate, N-haloformyl, haloformate and acid anhydride groups; and a process for producing the same. The semipermeable composite membrane of this invention is especially useful for desalination of saline or brackish water by reverse osmosis.</p> |
申请公布号 |
CA1120795(A) |
申请公布日期 |
1982.03.30 |
申请号 |
CA19790327836 |
申请日期 |
1979.05.17 |
申请人 |
TEIJIN LIMITED |
发明人 |
KAWAGUCHI, TAKEYUKI;TAKETANI, YUTAKA;MINEMATSU, HIROYOSHI;SASAKI, NORIAKI;HAYASHI, YUZURU;HARA, SHIGEYOSHI |
分类号 |
B01D71/82;B01D69/12;B01D71/62;B01D71/66;(IPC1-7):B01D13/04;B01D13/00;C02F1/44 |
主分类号 |
B01D71/82 |
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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