Aluminum trihydrate crystals and improved method for the production thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 29, 2003
Issued Date -
N/A
app pub date -
Apr 2, 2001
filing date -
Dec 14, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides an improved process for the production of alumina trihydrate crystals. Through the addition of a hydroxamated polymer at various stages of the process for production of these alumina trihydrate crystals, an upward shift in the particle size distribution of the alumina trihydrate crystals occurs. In one embodiment, the hydroxamated polymer is added to a filtered aqueous solution, which comprises no more than about 10 mg of insoluble solids per liter. In another embodiment, the hydroxamated polymer is added to an aqueous solution comprising insoluble solids after precipitation of alumina trihydrate crystals has commenced. Optionally, alumina trihydrate seed crystals may be added to the aqueous solution to initiate or encourage crystal formation.
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