Extractive distillation for separating ketones and/or alcohols from phenol and/or cresol
US4187152A · kind A · utility
5Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1978 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Dec 29, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An extractive distillation process for separating one or more members of the group consisting of alkanols, alkanones, cycloalkanols and/or cycloalkanones from mixtures with phenol and/or cresol. One or more members of the group consisting of alkylated or unmodified cycloalkyl or aryl-derivatives of cyclohexanone or cyclohexanol having up to about 22 carbon atoms are employed as extractive solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.