Removal of guaiacol from cresylic acid by heating with a strong base
US5254750A · kind A · utility
0Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1993 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Apr 5, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for the removal of guaiacol and substituted guaiacols from naturally occurring cresylic acid feed by heating the feed with a strong base, particularly sodium hydroxide, to produce a purified cresylic acid product essentially free of guaiacol and other methoxy aromatic compounds without significant loss of cresylic acid product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.