- 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.
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