Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1989-05-08
1990-01-16
Sever, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210655, B01D 1300
Patent
active
048941654
ABSTRACT:
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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Colucci Michael J.
Fibiger Richard F.
Forgach David J.
Schmidt Donald L.
Wessling Ritchie A.
Sever Frank
The Dow Chemical Company
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