Mineral collector compositions and processes for making and using same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 25, 2002
Issued Date -
N/A
app pub date -
Sep 15, 2000
filing date -
May 27, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Collector compositions of a mixture of a C.sub.6 to C.sub.22 fatty hydroxamic acid and an oil for use in a method for the removal of impurities from mineral ores by the froth flotation method. The collectors are prepared by reacting an ester of a C.sub.6 to C.sub.22 fatty acid with a hydroxylamine salt and a base in the presence of an oil and water to produce an alkyl hydroxamate salt; acidifying the alkyl hydroxamate salt, forming an organic layer and an aqueous layer, wherein the organic layer contains a C.sub.6 to C.sub.22 fatty hydroxamic acid substantially free of starting esters and hydrolysis and transesterification products of the ester; and separating the organic layer from the aqueous layer to provide a collector composition of the C.sub.6 to C.sub.22 fatty hydroxamic acid and the oil.
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