Method for the preparation of thin-skinned asymmetric reverse os

Details Method for the preparation of thin-skinned asymmetric reverse os Method for the preparation of thin-skinned asymmetric reverse os

1982-06-25

1984-06-26

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521142, 521149, 264 41, C08F 1606

Patent

active

044567081

ABSTRACT:
A method for preparing water-insoluble asymmetric reverse osmosis membranes from water-soluble polymers is disclosed. The method involves casting a polymer film, partially drying it and then contacting it with a transition metal polyvalent ion solution. Optionally, the product of the contacting is cross-linked such as by radiation or heat. The membrane products are disclosed as well.

REFERENCES:
patent: 3318856 (1967-05-01), Deyrup
patent: 3481888 (1969-12-01), Sinclair
patent: 3591543 (1971-07-01), Stafford
patent: 3992495 (1976-11-01), Sano et al.
patent: 4073733 (1978-02-01), Yamauchi et al.
patent: 4279752 (1981-07-01), Sueoka et al.

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