Phosphate fluorosurfactants for use in carbon dioxide
US7122060B2 · kind B2 · utility
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25References
27Claims
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Key dates
| Filing date | Dec 23, 2003 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Apr 4, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S438/906
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of removing water from a composition of matter comprises contacting a first composition of matter comprising water with a second composition of matter comprising: (1) at least one surfactant comprising at least one phosphate group and (2) a solvent comprising carbon dioxide, wherein at least a portion of the surfactant is soluble in the solvent, such that the at least one surfactant removes at least a portion of the water from the first composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.