Reversible stabilized emulsion and method for stabilizing and/or destabilizing an emulsion
US7273892B2 · kind B2 · utility
0Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Oct 18, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a stable emulsion of an immiscible fluid and of an aqueous phase having a determined pH value. The emulsion is optimized in that it comprises an ionic surfactant and a polyampholytic polymer whose charge depends on the pH value. The respective amounts of surfactant and of polymers are determined according to the charges. Stabilization or destabilization of the emulsion is adjusted by controlling the pH value.The invention also relates to a method of stabilizing and destabilizing an emulsion comprising a surfactant combined with an ampholytic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.