Process for the preparation of a purified acid composition
US10351544B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2016 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Jun 6, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00162
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A purified acid composition including 2,5-furandicarboxylic acid is prepared by a process including a) providing an acid composition solution of a crude acid composition in a polar solvent, the crude acid composition including 2,5-furandicarboxylic acid (FDCA) and 2-formyl-furan-5-carboxylic acid (FFCA); b) contacting the acid composition solution with hydrogen in the presence of a hydrogenation catalyst to hydrogenate FFCA to hydrogenation products, such that the hydrogenation products contain a minor amount of 2-methyl-furan-5-carboxylic acid (MFA) or no MFA, yielding a hydrogenated solution; c) separating at least a portion of the FDCA from the hydrogenated solution by crystallization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.