- 专利标题： Rejection enhancing coatings for reverse osmosis membranes
- 专利标题（中）： 反渗透膜防止涂层
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申请号： US348930申请日： 1989-05-08
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公开(公告)号： US4909943A公开(公告)日： 1990-03-20
- 发明人: Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
- 申请人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
- 申请人地址： MI Midland
- 专利权人： The Dow Chemical Company
- 当前专利权人： The Dow Chemical Company
- 当前专利权人地址： MI Midland
- 主分类号： B01D67/00
- IPC分类号： B01D67/00
摘要：
Reverse osmosis membranes treated with polymers bearing carboxylic acid groups and optionally pendant hydroxyl or amide moieties display enhanced salt rejection and/or increased water flux. This treatment is particularly useful for improving the membrane characteristics of cellulose acetate and polyamide membranes.