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Reverse osmosis membrane of high urea rejection propertiesPolymeric 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. A polymeric membrane is formed by depositing a polymer of the unsaturated monomer from the plasma onto a substrate, so that nitrogen from the nitrogen gas is incorporated within the polymer in a chemically combined form.
Document ID
19800014962
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Johnson, C. C.
(NASA Ames Research Center Moffett Field, CA, United States)
Wydeven, T. J.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 4, 2013
Publication Date
April 22, 1980
Subject Category
Nonmetallic Materials
Accession Number
80N23452
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,199,448|NASA-CASE-ARC-10980-1
Patent Application
US-PATENT-APPL-SN-694407
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