Separation of ethanol from isopropanol by azeotropic distillation
US5338411A · kind A · utility
8Cited by
4References
1Claims
0Family size
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Inventor
Key dates
| Filing date | Jan 14, 1994 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Jan 14, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/82
- 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 azeotropic distillation. Effective agents are methyl ethyl ketone, cyclopentane and 2-pyrrolidinone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.