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Quaternary ammonium surfactants
(United States Patent and Trademark Office, 2015-12-08)
Provided herein, inter alia, are novel compositions and methods having application in the field of enhanced oil recovery. In particular, the quaternary ammonium compounds and mixtures thereof presented herein can be used, ...
Compositions and methods for controlling the stability of ethersulfate surfactants at elevated temperatures
(United States Patent and Trademark Office, 2015-08-18)
The present invention describes the method of making an ether sulfate surfactant solution hydrolytically stable by adding one or more alkalinity generating agents at levels greater than 0.05%. The surfactant solutions of ...
Alkoxy carboxylate surfactants
(United States Patent and Trademark Office, 2017-10-10)
Provided herein are inter alia novel compositions and methods having application in a variety of fields including the field of enhanced oil recovery, the cleaning industry as well as groundwater remediation. In particular, ...
Alkyl hydrophobe surfactants
(United States Patent and Trademark Office, 2018-01-09)
Provided herein are inter alia novel compositions and methods having application in the field of enhanced oil recovery. In particular, the short hydrophobe compounds and mixtures thereof presented herein can be used, inter ...
Anionic polyalkoxy group comprising surfactants on basis of guerbet-alcohols, method of manufacture and use in enhanced oil recovery (EOR) applications
(United States Patent and Trademark Office, 2016-03-29)
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 ...