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. 19, 1988
Filed:
May. 12, 1986
Applicant:
Inventors:
Richard J Pratt, Thornton, NH (US);
Richard A Slepetys, Brick Township, Ocean County, NJ (US);
Saad Nemeh, West Long Branch, NJ (US);
Mitchell J Willis, Macon, GA (US);
Assignee:
Engelhard Corporation, Menlo Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
1063 / ; 1062 / ; 106214 ; 209-5 ; 428521 ; 428533 ; 501147 ; 501148 ; 524447 ;
Abstract
A highly bulked kaolin pigment is prepared by mixing a small but effective amount of a water-soluble cationic polyelectrolyte flocculant with a kaolin clay pigment in the presence of water to prepare a bulked clay pigment product. Upon dewatering, the resultant polyelectrolyte treated clay product can be dispersed to form high solids clay-water slurries useful in making aqueous coating colors suitable for manufacturing coating lightweight publication papers or the pigment can be used as a filler for paper webs.