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    • 2. 发明授权
    • Surface-hydrophilic, highly selective semipermeable membrane
    • 表面亲水,高选择性半透膜
    • US4948508A
    • 1990-08-14
    • US341217
    • 1989-04-21
    • Tsutomu NakagawaAkon Higuchi
    • Tsutomu NakagawaAkon Higuchi
    • C08J9/36B01D65/10B01D67/00C08J7/12D01F6/74D01F6/76
    • B01D67/0093C08J7/12
    • A surface-hydrophilic, highly selective semipermeable membrane comprising a semipermeable membrane of a hydrophobic polymer and a hydrophilic segment having at least one end directly bonded to at least one surface of the semipermeable membrane is disclosed. The hydrophilic segment comprises at least one methylene group or substituted methylene group which is positioned at least at one end of the segment and at least one neutral hydroxyl group. The surface-hydrophilic, highly selective semipermeable membrane not only has excellent resistance to heat and organic solvents, but also non-adsorptivity for organic substances including even ionic organic substances. Therefore, the surface-hydrophilic, highly selective semipermeable membrane of the present invention can advantageously be used for microfiltration, ultrafiltration, reverse osmosis and dialysis.
    • 公开了一种表面亲水性,高度选择性的半透膜,其包含疏水性聚合物的半透膜和亲水性链段,其至少一端直接结合至半透膜的至少一个表面。 亲水性片段包含至少一个位于片段的至少一个末端和至少一个中性羟基的亚甲基或取代的亚甲基。 表面亲水,高选择性的半透膜不仅具有优异的耐热性和有机溶剂性,而且对有机物质(包括均匀的离子有机物质)也具有非吸附性。 因此,本发明的表面亲水性高选择性半透膜可以有利地用于微滤,超滤,反渗透和透析。