Removal of guaiacol from cresylic acid feedstreams by heating with a strong acid
US5177269A · kind A · utility
1Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1992 |
| Grant date | Jan 5, 1993 |
| Priority date | — |
| Expiry date | Jun 18, 2012 |
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 from naturally occurring cresylic acid feed by heating the feed with a strong acid, particularly hydrochloric acid or sulfuric acid, 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.