Method of manufacture and use of large hydrophobe ether sulfate surfactants in enhanced oil recovery (EOR) applications
US8211837B2 · kind B2 · utility
34Cited by
6References
51Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2010 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Sep 22, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention describes the method of making anionic ether sulfate surfactants by alkoxylation of a GA using PO and/or EO followed by a sulfation reaction. The GA of the present invention is made by a facile and inexpensive method that involves high temperature base catalyzed dimerization of a linear alcohol. The ether sulfate surfactants of the present invention find uses in EOR applications where it is used for solubilization and mobilization of oil and for environmental cleanup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.