Process for purifying benzene dicarboxylic acids
US4126638A · kind A · utility
4Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1976 |
| Grant date | Nov 21, 1978 |
| Priority date | — |
| Expiry date | Apr 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A benzene dicarboxylic acid is purified by heating a solution thereof to 110.degree. - 350.degree. C in the presence of a hydrogenation catalyst; the solvent is a mixture of water with a secondary or tertiary alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.