Treatment of composite polyamide membranes with compatible oxidants
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 2, 1990
Grant Date -
N/A
app pub date -
Dec 13, 1989
filing date -
Dec 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reverse osmosis membrane having improved rejection of sulfuric acid and/or isopropanol is described. The membrane is prepared by treating a crosslinked, polyamide discriminating layer with a compatible oxidizing reagent, such as peracetic acid, periodic acid or chloramine, whereby the passage through the treated membrane of sulfuric acid in a 2 percent aqueous solution at a transmembrane pressure of 400 psi is reduced by at least 30 percent.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully