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:
May. 27, 2008
Filed:
Nov. 12, 2003
Ashoke K. Sengupta, Barrington, IL (US);
Jerald W. Darlington, Jr., Marengo, IL (US);
Jennifer Gould, Sheboygan, WI (US);
Iiona Lin, Arlington Heights, IL (US);
Ashoke K. SenGupta, Barrington, IL (US);
Jerald W. Darlington, Jr., Marengo, IL (US);
Jennifer Gould, Sheboygan, WI (US);
Iiona Lin, Arlington Heights, IL (US);
AMCOL International Corp., Arlington Heights, IL (US);
Abstract
Concentrated suspensions of smectite clays are obtained as either relatively 'thin' or highly shear-thinning slurries that are easy to pump, by adding one or more of certain cationic polymers whose weight average molecular weight, Mw, is 50,000 or higher. It was found during the course of the invention that a cationic polymer with an Mw of 10,000 did not work, while the same polymer with a bimodal Mw of 50,000 and 30,000 worked satisfactorily. To achieve the full advantage of the present invention, the cationic polymer preferably has 1 to 10 milliequivalents of cationic charge per gram of the polymer, and more preferably 5 to 10 milliequivalents of cationic charge per gram of the polymer, and most preferably 6 to 8 milliequivalents of cationic charge per gram of the polymer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile