发明名称 |
Composite polyamide reverse osmosis membrane and method of producing the same |
摘要 |
A composite polyamide reverse osmosis membrane and method of producing same. In a preferred embodiment, the membrane is made by coating a porous polysulfone support with an aqueous solution containing 2 wt % m-phenylenediamine (MPD), and 0.1 wt % di(ethylene glycol) hexyl methyl ether. Next, the excess solution is removed, and the coated support is dipped in 0.1 wt % organic solvent solution of trimesoyl chloride (TMC) in a mixture of alkanes having from 8 to 12 carbon atoms. After draining the TMC solution off, the resulting composite membrane is air dried and then rinsed in a basic aqueous solution. The resultant membrane exhibits a flux of 21.3 gfd and a salt rejection of 98.9% when used at 225 psi for an aqueous solution containing 2000 ppm of NaCl.
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申请公布号 |
EP1707255(A2) |
申请公布日期 |
2006.10.04 |
申请号 |
EP20060005504 |
申请日期 |
2006.03.17 |
申请人 |
SAEHAN INDUSTRIES, INC. |
发明人 |
KOO, JA-YOUNG;HONG, SUNG PYO;LEE, JONG HWA;KIM, JUN SUK |
分类号 |
B01D71/56;B01D69/10;B01D69/12 |
主分类号 |
B01D71/56 |
代理机构 |
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地址 |
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