Process for the production of aromatic carboxylic acids
US4827025A · kind A · utility
62Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/0011
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of aromatic carboxylic acid in a continuous manner by oxidizing an alkyl aromatic compound in the liquid phase with an oxygen-containing gas in the presence of heavy metal compound(s) and/or bromine-containing compound, which process is characterized by that a part of the reaction gas delivered from the reactor and freed from the condensing components is recirculated by returning it to the reactor at a portion within the gas region. Said process permits to produce aromatic carboxylic acids of high quality, while eliminating the troubles due to foaming occurring on the liquid surface in the reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.