Recovery of phenol values from purification residues
US4088703A · kind A · utility
3Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1973 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Oct 18, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes for the recovery of phenol values as cyclohexanol from the purification residue obtained in the amine purification of phenol. The recovery of phenol values may be effected by hydrogenation in the presence of a nickel catalyst and distilling the hydrogenation product to obtain cyclohexanol. Alternatively, the purification residue may be distilled and the distillate hydrogenated to produce a hydrogenation product from which cyclohexanol may be recovered by a second distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.