Process for the preparation of an aromatic dicarboxylic acid
US10787748B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2016 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | May 20, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B11/057
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An aromatic dicarboxylic acid of chemical formula HOOC—Ar1—COOH is prepared in a process wherein a feedstock comprising at least an aromatic aldehyde compound of chemical formula (1): OHC—Ar1—COOH, wherein Ar1 represents an arylene or heteroarylene moiety, and an aqueous electrolyte are provided; the feedstock and the aqueous electrolyte are introduced into an electrolytic cell comprising electrodes, wherein at least one of the electrodes comprises a non-noble metal and/or an oxide and/or a hydroxide thereof and/or carbon; and the aromatic aldehyde compound of formula (1) is oxidized electrochemically to yield the aromatic dicarboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.