发明名称 |
Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups |
摘要 |
A novel composite membrane and methods of making the membrane are described. The discriminating layer of the membrane is prepared by reaction of a reactive cationic compound group with a compound bearing a nucleophilic moiety. At least one of the reactants bears an average of two or more reactive groups. The reaction product contains covalent bonds formed via charge eliminating reactions. In a preferred embodiment of the invention, the nucleophilic group is anionic and a coacervate is formed initially on a microporous substrate. The resulting membrane may be useful for reverse osmosis, gas or ultrafiltration separations.
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申请公布号 |
US4839203(A) |
申请公布日期 |
1989.06.13 |
申请号 |
US19870086122 |
申请日期 |
1987.08.17 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
DAVIS, THOMAS E.;SCHMIDT, DONALD L.;KAU, JEE I.;WESSLING, RITCHIE A.;WHIPPLE, SHARON S.;FIBIGER, RICHARD F.;PICKELMAN, DALE M. |
分类号 |
B01D67/00;B01D69/08;B01D69/12;B01D69/14;B01D71/40;B01D71/44;B01D71/46;B01D71/52;B01D71/68;B01D71/72;B01D71/80;B01D71/82 |
主分类号 |
B01D67/00 |
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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