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:
Jun. 25, 1996
Filed:
Apr. 10, 1995
Thomas D Thompson, Hephzibah, GA (US);
United Catalysts Inc., Louisville, KY (US);
Abstract
A process is disclosed for the production of a blended smectite clay with enhanced rheology, particle size restriction and reduced abrasion characteristics which is useful for the coating of paper. The process comprises slurrying of a predominantly sodium smectite clay, slurrying a predominantly calcium smectite clay, degritting of the clay slurries to remove coarse grained impurities, removing a substantial portion of the undesirable soluble salts from the clay slurries, fractionating the clay slurries to control particle size of the smectite clays in the slurry and blending together the predominantly sodium smectite clay slurry with the predominantly calcium smectite clay slurry to form a blended clay slurry.