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. 13, 2009
Filed:
Nov. 29, 2006
Applicants:
Maureen A. Defeo, West Grove, PA (US);
Glenn Richard Evers, Hockessin, DE (US);
Patrick F. Mcintyre, West Chester, PA (US);
Inventors:
Maureen A. Defeo, West Grove, PA (US);
Glenn Richard Evers, Hockessin, DE (US);
Patrick F. McIntyre, West Chester, PA (US);
Assignee:
E.I. Du Pont de Nemours & Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C 1/02 (2006.01); C09C 1/36 (2006.01); D21F 11/00 (2006.01); D21H 11/00 (2006.01); D21H 13/00 (2006.01); D21H 15/00 (2006.01); C01F 7/02 (2006.01); C01G 23/047 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to Aluminum trihydrate slurries comprising aluminum trihydrate particles, an acrylic dispersant, citric acid, synthetic hectorite clay, optionally a compound to adjust pH, a biocide and water. These slurries may be mixed with titanium dioxide slurries to produce a stable slurry blends useful in paper and paper-board applications.