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US 12,286,588 B2Granted
Polyanionic surfactants and methods of making and using thereof
AssigneeChevron U.S.A. Inc.
InventorsGayani W. Pinnawala, Sujeewa S. Palayangoda, Gregory A. Winslow, Varadarajan Dwarakanath
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Abstract
The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.
Claims19
A surfactant defined by Formula I below
- or a salt thereof, wherein
- p is an integer from 1 to 5;
- R1 represents a C8-C50 alkyl group;
- AO represents, individually for each occurrence, an alkyleneoxy group selected from an ethoxy group, a propoxy group, or a butoxy group;
- and
- w is an integer from 1 to 110.
3 more elements
Dependencies are inferred from the claim text.