Process for the production of purified terephthalic acid
US7196215B2 · kind B2 · utility
10Cited by
26References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2002 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | May 31, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/487
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for the production of terephthalic acid by a plurality of process steps including the catalyst oxidation of a dialkylbenzene compound, a second oxidation, a hydrogenation of the product of the second oxidation, and crystallization of the hydrogenation terephthalic acid using a plurality of series-connected crystallizers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.