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. 22, 2010
Filed:
Oct. 11, 2007
Barrett Richard Bobsein, Sellersville, PA (US);
Melissa Merlau Johnson, Ambler, PA (US);
John Joseph Rabasco, Allentown, PA (US);
Carol Zeszotarski, Lansdale, PA (US);
Barrett Richard Bobsein, Sellersville, PA (US);
Melissa Merlau Johnson, Ambler, PA (US);
John Joseph Rabasco, Allentown, PA (US);
Carol Zeszotarski, Lansdale, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
A composition and method whereby the same group that is attached to or within the backbone of an associative thickener is reversibly switched between being hydrophilic and hydrophobic in nature. When the group that is attached to or within the backbone is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this group is rendered hydrophobic, the thickener performs its thickening function efficiently. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened.