Separation of ethanol from isopropanol by extractive distillation
US5445716A · kind A · utility
85Cited by
7References
1Claims
0Family size
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Key dates
| Filing date | Oct 18, 1994 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Oct 18, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/84
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Ethanol is difficult to separate from isopropanol by conventional distillation or rectification because of the proximity of their boiling points. Ethanol can be readily separated from isopropanol by extractive distillation. Effective agents are dipentene, anisole and ethyl benzene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.