Separation of ethanol from isopropanol by extractive distillation
US5348625A · kind A · utility
84Cited by
3References
1Claims
0Family size
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Key dates
| Filing date | Jan 14, 1994 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Jan 14, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C31/10
- 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 methyl caproate, cyclopentane and isobutyl acetate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.