The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2002
Filed:
Jul. 18, 2000
Applicant:
Inventors:
D. R. Nagaraj, Stamford, CT (US);
Roderick G. Ryles, Milford, CT (US);
Alan S. Rothenberg, Wilton, CT (US);
Assignee:
Cytec Industries Inc., Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03B 1/00 ;
U.S. Cl.
CPC ...
B03B 1/00 ;
Abstract
A process for the flocculation of impurities from clays in which the following steps are performed: blunging the clay with a dispersing agent or combination of dispersing agents in water to form an aqueous dispersion, treating the aqueous dispersion with at least one aliphatic or aromatic hydroxamic acid or salt conditioning agent, flocculating the conditioned dispersion with a water soluble or water dispersible organic polymer containing hydroxamic acid groups or salts thereof, and removing the flocculated impurities to form a purified clay dispersion.