Patent · US Active

Anionic-cationic-nonionic surfactant, production and use thereof

US10400156B2 · kind B2 · utility

0Cited by

2References

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	Oct 22, 2014
Grant date	Sep 3, 2019
Priority date	—
Expiry date	Mar 7, 2035

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.