Patent · US Active

Anionic-cationic-nonionic surfactant, production and use thereof

US11186764B2 · kind B2 · utility

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4References

7Claims

0Family size

Assignees

Inventors

Yingcheng Li · Shanghai, CN
Songyuan Gu · Beijing, CN
Weidong Zhang · Shanghai, CN
Xinning Bao · Shanghai, CN
Ou Sha · Shanghai, CN
Zhiqin Shen · Shanghai, CN
Yiqing Yang · Shanghai, CN
Xiaodong Zhai · Shanghai, CN

Key dates

Filing date	Jul 11, 2019
Grant date	Nov 30, 2021
Priority date	—
Expiry date	Oct 27, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/602
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

This invention relates to an anionic-cationic-nonionic surfactant as substantially represented by the formula (I), production and use thereof in tertiary oil recovery. The anionic-cationic-nonionic surfactant of this invention exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present anionic-cationic-nonionic surfactant, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.In the formula (I), each group is as defined in the specification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.