Process for the production of aromatic acids
US6670502B1 · kind B1 · utility
2Cited by
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14Claims
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Key dates
| Filing date | Sep 28, 2000 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Feb 6, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/265
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for producing mono- and poly-carboxylic aromatic acids wherein an aromatic compound having at least one oxidizable substituent directly linked to the carbon atom of the corresponding aromatic nucleus is oxidized in the presence of a catalyst system in the liquid homogenous phase. The oxidation reaction is carried out in aqueous acetic acid, and the catalyst system consists of a combination of cobalt and zirconium organic salts. The oxidation reaction is carried out at an absolute pressure lower than 10 bar and at a temperature of 90-150° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.