发明名称 |
Supported anisotropic reverse osmosis membranes based on synthetic polyamides and processes for their preparation |
摘要 |
Supported anisotropic reverse osmosis membrane based on synthetic polyamides are prepared by first preparing a support therefor for treating a material suited for serving as a support for a polyamide membrane, with a heat resistant water soluble polymer which is insoluble in the polar solvents to be used for preparing the polyamide solution described below; preparing a solution of the polyamide in an organic polar solvent, in the presence of a saline compound; spreading the thus prepared polyamide solution onto the prepared support; partially evaporating the solvent by heating; coagulating the membrane in an aqueous medium; and optionally, thermally treating the membrane.
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申请公布号 |
US4230583(A) |
申请公布日期 |
1980.10.28 |
申请号 |
US19780951365 |
申请日期 |
1978.10.16 |
申请人 |
CHIOLLE, ANTONIO;GIANOTTI, GIUSEPPE;PARRINI, GIANFRANCO |
发明人 |
CHIOLLE, ANTONIO;GIANOTTI, GIUSEPPE;PARRINI, GIANFRANCO |
分类号 |
B01D71/38;B01D69/10;B01D71/40;B01D71/44;B01D71/56;C08G69/26;(IPC1-7):C08J3/16;C08J5/18 |
主分类号 |
B01D71/38 |
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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