Reverse osmosis membrane of high urea rejection properties

Details Reverse osmosis membrane of high urea rejection properties Reverse osmosis membrane of high urea rejection properties

1976-06-09

1980-04-22

Spitzer, Robert H.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

204171, 210500M, 427 41, 427245, B01D 1304, B01D 1300

Patent

active

041994485

ABSTRACT:
Polymeric membranes suitable for use in reverse osmosis water purification because of their high urea and salt rejection properties are prepared by generating a plasma of an unsaturated hydrocarbon monomer and nitrogen gas from an electrical source and forming a polymeric membrane by depositing a polymer of said unsaturated monomer from said plasma onto a substrate, such that nitrogen from the nitrogen gas is incorporated within the polymer in a chemically combined form.

REFERENCES:
patent: 2916534 (1959-12-01), Schallus et al.
patent: 3111424 (1963-11-01), Le Clair
patent: 3600218 (1971-08-01), Pennebaker
patent: 3662046 (1972-05-01), Woo et al.
patent: 3847652 (1974-11-01), Fletcher et al.
patent: 3925187 (1975-12-01), Bernard

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