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:
Sep. 28, 2010
Filed:
Dec. 13, 2006
Applicants:
Barrett Richard Bobsein, Sellersville, PA (US);
Melissa Merlau Johnson, Ambler, PA (US);
Lifeng Zhang, Clifton Park, NY (US);
Inventors:
Barrett Richard Bobsein, Sellersville, PA (US);
Melissa Merlau Johnson, Ambler, PA (US);
Lifeng Zhang, Clifton Park, NY (US);
Assignee:
Rohm and Haas Company, Phila., PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 75/04 (2006.01); C08L 71/02 (2006.01); C08L 101/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for improving the viscosity stability of an aqueous composition having a latex polymer and associative thickeners with at least one hydrophilic segment and at least two hydrophobic segments is provided. The associative thickeners are chosen such that one associative thickener has a lower molecular weight than the other associative thickener.