Liquid purification or separation – Filter – Material
Patent
1988-03-02
1989-05-09
Sever, Frank
Liquid purification or separation
Filter
Material
21050038, B01D 1300
Patent
active
048287008
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.
REFERENCES:
patent: 4704324 (1987-11-01), Davis et al.
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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