Method for separation of polyvinyl alcohol from aqueous solutions thereof using peroxodisulfates
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 5, 1992
Grant Date -
N/A
app pub date -
May 10, 1991
filing date -
May 17, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for separation of PVA from an aqueous solution thereof such as the waste water containing PVA from the pretreatment of a textile product, in which a peroxosulfate such as ammonium peroxosulfate is added to an aqueous PVA solution, particularly in an acidic condition with addition of sulfuric acid, at a temperature above 70.degree. C. for the separation of PVA, and as a result the thus separated PVA contains only a small amount of water in the range of about 60-70% and can easily be treated.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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