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. 07, 2011
Filed:
Nov. 29, 2007
Compositions having ph-dependent viscosity, thickener systems containing the same, and uses therefor
Ulrich Steinbrenner, Neustadt, DE;
Günter Oetter, Frankenthal, DE;
Uwe Ossmer, Houston, TX (US);
Marcus Guzmann, Mühlhausen, DE;
Ulrich Steinbrenner, Neustadt, DE;
Günter Oetter, Frankenthal, DE;
Uwe Ossmer, Houston, TX (US);
Marcus Guzmann, Mühlhausen, DE;
BASF SE, , DE;
Abstract
Compositions comprising: (A) at least one surfactant of the general formula (I)(R—[(O—(CH))(O—CH(CH)CH)]O)P(═O)(OH)  (I)wherein the sequence of the alkyleneoxy units is arbitrary, each Rindependently represents a moiety selected from the group consisting of linear and branched C-C-alkyl, C-C-alkenyl, C-C-alkynyl, (C-C-alkyl)carbonyl, (C-C-alkenyl)carbonyl and (C-C-alkynyl)carbonyl, k represents 1 or 2 and x1 and x2 each independently represent an integer of 0 to 20, the sum of x1 and x2 being a number of 1 to 20; and (B) at least one thickener comprising at least two hydrophobic groups Rwhich are linked to one another via a bridging hydrophilic group (α), wherein each R, independently represents a moiety selected from the group consisting of C-C-alkyl, C-C-alkenyl, C-C-alkynyl, cycloalkyl, aryl, and aryl-C-C-alkyl, which in each case may have up to 3 hydroxyl substituents; wherein the composition has a pH which is viscosity-dependent.