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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.:

US 8841241 B1

PDFFull Text
Expired
Date of Patent:
Sep. 23, 2014

Filed:

Apr. 12, 2011

Anionic polyalkoxy group comprising surfactants on basis of guerbet-alcohols, method of manufacture and use in enhanced oil recovery (eor) applications

Applicants:

Upali P. Weerasooriya, Austin, TX (US);

Gary A. Pope, Cedar Park, TX (US);

Christian Bittner, Bensheim, DE;

Guenter Oetter, Frankenthal, DE;

Jack F. Tinsley, Mannheim, DE;

Christian Spindler, Ludwigshafen, DE;

Gabriela Alvarez-jurgenson, Mannheim, DE;

Sophie Maitro-vogel, Mannheim, DE;

Inventors:

Upali P. Weerasooriya, Austin, TX (US);

Gary A. Pope, Cedar Park, TX (US);

Christian Bittner, Bensheim, DE;

Guenter Oetter, Frankenthal, DE;

Jack F. Tinsley, Mannheim, DE;

Christian Spindler, Ludwigshafen, DE;

Gabriela Alvarez-Jurgenson, Mannheim, DE;

Sophie Maitro-Vogel, Mannheim, DE;

Assignees:

Board of Regents, The University of Texas System, Austin, TX (US);

BASF SE, Ludwigshafen, DE;

Attorneys:

Edwin S. Flores

Chalker Flores, LLP

Primary Examiner:

Susannah Chung

Assistant Examiner:

Kumar R Bhushan

Int. Cl.
CPC ...
C09K 8/584 (2006.01); E21B 43/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

Compositions and methods of synthesis of anionic surfactants by alkoxylation of a Guerbet alcohol (GA) having 12 to 36 carbon atoms using butylene oxide, and optionally propylene oxide and/or ethylene oxide followed by the incorporation of a terminal anionic group are described herein. The GA of the present invention is made by a facile and inexpensive method that involves high temperature base catalyzed dimerization of alcohols with 6 to 18 carbon atoms. The large hydrophobe ether surfactants of the present invention find uses in enhanced oil recovery (EOR) applications where it is used for solubilization and mobilization of oil and for environmental cleanup. Further, the hydrophobe alkoxylated GA without anionic terminal group can be used as an ultra-high molecular weight non-ionic surfactant.

Find Patent Forward Citations

Weerasooriya, Upali. (2014). Anionic polyalkoxy group comprising surfactants on basis of guerbet-alcohols, method of manufacture and use in enhanced oil recovery (eor) applications (U.S. Patent No. 8841241). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8841241

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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