| Original document(14 pages) Authorized document(14 pages) 中文版 |
Chlorine-resistant semipermeable membranes which comprise an interfacial polymerized reaction product composite on a porous support backing material may be prepared by contacting a porous support material such as polysulfone with an aqueous solution an aromatic polyamine, said aqueous solution containing a polyhydric compound and an acid acceptor. The coated support material is then contacted with an organic solvent solution of an aromatic polycarboxylic acid halide for a period of time sufficient to form an interfacial polymerized reaction product on the surface of the support material. The resulting composite is then post treated by washing with an alkaline compound, leaching with sodium bisulfite and treating the leached composite with a polyhydric compound. The resultant membrane composite may be used in separation processes such as the desalination of brackish or sea water, the membrane being resistant to attack by chlorine which is present in the water. |
Application Number
申请号 |
89102360 |
Application Date
申请日 |
1989.04.17 |
| Title 名称 |
Chlorine-resistant semipermeable membranes |
Publication Number
公开号 |
1046472 |
Publication Date
公开日 |
1990.10.31 |
| Approval Pub. Date |
|
Granted Pub. Date |
1995.09.27 |
| International Classification 分类号 |
B01D67/00,B01D69/12,B01D71/58 |
Applicant(s) Name
申请人 |
Allied-Signal Inc. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Chinh N. Tran, Chu Hong Quan |
| Attorney & Agent 代理人 |
WANG HUI LI RUOJUAN |
| More information 更 多 信 息 |
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