Process for the production of the mixture 2,4 furandicarboxylic acid (FDCA) and 2,5 furandicarboxylic acid via disproportionation reaction
AssigneeBraskem S.A.
InventorsJacco van Haveren, Shanmugam Thiyagarajan, Augusto Teruo Morita
Life of this patent
Estimating the term…
Abstract
The present invention refers to a process for production of a mixture including 2,4-furandicarboxylic acid (2,4-FDCA) and 2,5 furandicarboxylic acid (2,5-FDCA) through the disproportionation route, using as base compounds oxidation products of furfural. This invention also relates to a process for production of 2,4-FDCA as a result of a disproportionation route and the use of 2,4-FDCA as a monomer or comonomer to synthesize esters or any compounds which can generate macromolecules, such as polyesters.
Claims9
A process for producing a mixture of 2,4-FDCA and 2,5-FDCA by a disproportionation route comprising the following steps:
- a) oxidizing furfural compounds in the presence of catalysts and alkaline solution in order to obtain biobased furoic acid salts, wherein the catalysts are selected from the group consisting of Au/TiO2, Au/C, Au/ZnO, Au/Fe2O3 or other Au catalysts;
- b) heating the furoic acid salts under stirring in the presence of a metal based catalyst to prepare a reaction mixture and cooling the reaction mixture until room temperature;
- c) collecting furan from the reaction mixture obtained in item (b) in order to obtain the mixture of 2,4-FDCA and 2,5-FDCA;
- d) optionally, filtering off black insoluble material of the reaction mixture obtained in item (c) and acidifying the reaction mixture in order to collect 2,5-FDCA;
- and
- e) optionally, subjecting the mixture obtained in item 1 (c), to an extraction or other separation method in order to purify 2,4-FDCA.
Dependencies are inferred from the claim text.