Process of producing a composite membrane
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United States of America Patent
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-
Jul 3, 1990
Issued Date -
N/A
app pub date -
Jul 25, 1989
filing date -
Mar 10, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for producing a composite membrance in which a sulphonated polymer is appled to the surface of a porous substrate, treating the polymer, in situ, on the substrate with cations of a polyvalent metal and converting the treated coating into a water insoluble layer on the support. The polyvalent metal may preferably by aluminum or chromium.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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