Separation of n-propanol from t-amyl alcohol by extractive distillation
US4935103A · kind A · utility
12Cited by
9References
1Claims
0Family size
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Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/84
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
n-Propanol and t-amyl alcohol cannot be separated from each other by distillation because of the proximity of their boiling points. n-Propanol can be readily separated from t-amyl alcohol by using extractive distillation in which the extractive agent is a higher boiling organic compound or a mixture of two or more of these. Typical examples of effective agents are: methyl salicylate; benzyl benzoate and hexahydrophthalic anhydride; methyl salicylate, benzoic acid and hexahydrophthalic anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.