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:
Mar. 06, 2001
Filed:
May. 04, 1998
Applicant:
Inventors:
Robert J. Kostelnik, Ellicott City, MD (US);
Fu-chu Wen, Severna Park, MD (US);
Assignee:
Millennium Inorganic Chemicals, Inc., Hunt Valley, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 1/430 ; C09C 1/36 ;
U.S. Cl.
CPC ...
C04B 1/430 ; C09C 1/36 ;
Abstract
The present invention discloses high solids slurries of anatase titanium dioxide pigment comprising greater than about 75% by weight of anatase TiO,pigment dispersed in water. A process for producing the slurries of the present invention is disclosed which comprises the steps of a) dry milling the anatase titanium dioxide pigment, preferably by pressure rolling, and b) mixing the dry milled pigment with water in the presence of an acrylic acid dispersant.