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:
Jan. 07, 1992
Filed:
Jan. 26, 1990
Applicant:
Inventor:
Dennis W Caton, Marion, IA (US);
Assignee:
Pacemaker, Ltd., Rock Island, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ; C09C / ;
U.S. Cl.
CPC ...
106417 ; 106416 ; 106436 ; 106437 ; 106442 ; 106446 ;
Abstract
Composite white pigments composed of titanium dioxide (TiO.sub.2) and kaolin are prepared by subjecting kaolin slurry to spray drying with injected gas to promote droplet fluffing and fragmentation. The slurry contains a hydrocolloid suspending agent and a cationic reagent for making the kaolin particles cationic. The frangible dry material thus produced can be blended with TiO.sub.2 particles to produce an extended TiO.sub.2 pigment.