Compositions and methods for controlling the stability of ethersulfate surfactants at elevated temperatures
US9109152B2 · kind B2 · utility
2Cited by
33References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2010 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Nov 16, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/584
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
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 the present invention have half-lives >8 months at 100° C. and find uses in EOR applications, environmental cleanups, detergent industry, and any other surfactant based high temperature applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.