Process for producing partially hydrolyzed acrylamide polymer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 13, 1985
Grant Date -
N/A
app pub date -
Apr 2, 1984
filing date -
Apr 4, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Polyacrylamide in the form of aquagel is partially hydrolyzed in such a manner that small pieces of the aquagel are mixed with an alkali agent in a specified quantity and maintained at a temperature of 50.degree. to 95.degree. C. until the hydrolysis reaches substantial completion. The quantity of the alkali agent is that corresponding to 1/1.1 to 1/3 of the hydrolysis percentage desired of the final partially hydrolyzed polyacrylamide. The partially hydrolyzed polyacrylamide thus produced is characterized by uniform hydrolysis evidenced by its improved solubility in water and a pH around 7 of its aqueous solution. The term 'aquagel' is herein used interchangeably with a term 'hydrogel'.
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