Method of temporarily inhibiting the swellability of water swellable clays and compositions
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 25, 1986
Grant Date -
N/A
app pub date -
Apr 5, 1985
filing date -
Apr 5, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of temporarily inhibiting the swelling capacity of a water-swellable clay composition in contact with water includes mixing with a water-swellable clay a water soluble anionic polymer having a weight average molecular weight of about 2,000 to about 150,000 and water. The water soluble anionic polymers temporarily inhibit the swelling capacity of the water-swellable clays to decrease the viscosity of the clay slurry for transport, such as by pumping to a further treatment station such as a drier station. Also disclosed are the clay-water-anionic polymer compositions. The water soluble anionic polymers having a weight average molecular weight in the range of 2,000 to 150,000 temporarily will inhibit the swelling of a water-swellable clay so that the clay solids content of the slurry can be approximately doubled for treatment. The temporary swell-inhibiting properties of the relatively low molecular weight anionic polymers permit treatment and transportation of a clay slurry having a relatively low viscosity so that the clay solids content of the slurry can be substantially increased for primary treatment and then for transport to a secondary treatment station, such as a drier.
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