发明名称 |
Composite membrane and method for making the same |
摘要 |
A composite membrane and method for making the same, comprising a porous support and a crosslinked polyamide surface. The subject membrane provides improved flux and/or rejection rates. The subject membrane is further capable of operating at lower operating pressures. The subject method includes reacting a polyfunctional amine with a polyfunctional acyl halide to form a polyamide. The method includes the step of contacting a phosphorous containing compound with the polyfunctional acyl halide prior to and/or during the reaction between the polyfunctional acyl halide and a polyfunctional amine. The subject process is easily adapted to commercial scale manufacturing processes and is particularly suited for making nanofiltration and reverse osmosis composite membranes.
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申请公布号 |
US6723241(B2) |
申请公布日期 |
2004.04.20 |
申请号 |
US20010005455 |
申请日期 |
2001.11.02 |
申请人 |
DOW GLOBAL TECHNOLOGIES INC. |
发明人 |
MICKOLS WILLIAM E. |
分类号 |
B01D65/10;B01D69/10;B01D69/12;B01D71/56;C08G69/28;C08J9/36;(IPC1-7):B01D39/00 |
主分类号 |
B01D65/10 |
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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