Process for manufacturing terephthalic acid by oxidation of paraxylene
US4145560A · kind A · utility
6Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1976 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Apr 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/265
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for manufacturing a benzene carboxylic acid by oxidation of an alkyl substituted benzene, and in particular for manufacturing terephthalic acid by oxidation of paraxylene, in which said benzene carboxylic acid, in solution in an aliphatic monocarboxylic acid, such as acetic acid, is oxidized by means of a gas containing molecular oxygen at a temperature T from 80.degree. to 260.degree. C. under a pressure from 2 to 30 kg/cm.sup.2, in the presence of a transition metal compound, in at least one reactor whose internal wall is maintained during the whole reaction time at a temperature, in .degree.C., from T - 10 to T + 100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.