Process of recovering methyl ethyl ketone from an aqueous mixture of methyl ethyl ketone and ethanol
US6121497A · kind A · utility
21Cited by
3References
7Claims
0Family size
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Key dates
| Filing date | Oct 16, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Oct 16, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/82
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the recovery of methyl ethyl ketone (MEK) from an aqueous mixture of MEK and ethanol comprising extracting the MEK from the mixture using an extractive solvent selected from the group consisting of isopentane, the o-, m-, m-isomers of xylene, and mixed xylenes. Preferably the extractive solvent is separated from the MFK in the extract by fractional distillation and recycled to the extraction step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.