Powdered superabsorbents, containing silica, their preparation process and their use
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 15, 1992
Grant Date -
N/A
app pub date -
Jun 25, 1991
filing date -
Aug 14, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Hydrophilic, powdered superabsorbents which are insoluble in water, containing by weight, in the dry state, in combination, from 1 to 45% of colloidal silica with an average diameter of non-agglomerated particles of about 9 to about 50 nanometers and 99 to 55% of a cross-linked polymer based on free acrylic acid, partially or totally salified by a sodium or potassium, preparation process and use notably for the absorption of aqueous fluids.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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