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:
Apr. 07, 1998
Filed:
May. 14, 1996
Applicant:
Inventors:
J Elmo Bloodworth, Milledgeville, GA (US);
John H Chapman, Sandersville, GA (US);
Sam M Pickering, Jr, Macon, GA (US);
Michael A Linkous, Raleigh, NC (US);
Assignee:
U.S. Borax, Inc., Valencia, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09C / ; C04B / ;
U.S. Cl.
CPC ...
106486 ; 106484 ; 241 22 ; 241 241 ; 241 2414 ; 241 2423 ;
Abstract
A method for producing a delaminated kaolin clay having a G.E. brightness of at least 85, a solids content of at least 67 percent by weight, and a viscosity below 500 cps is disclosed. An aqueous slurry of kaolin clay is subjected to agitation in the presence of a hard grinding media. The slurry is then subjected to agitation in the presence of a soft grinding media. The result is that at least 80 percent of the delaminated kaolin has an equivalent spherical diameter of less than or equal to 2 microns.