The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2025
Filed:
Dec. 17, 2020
Furanix Technologies B.v., Amsterdam, NL;
Hendrikus Jacob Baars, Amsterdam, NL;
Jan Hendrik Blank, Amsterdam, NL;
Jeffrey John Kolstad, Amsterdam, NL;
Ana Sofia Vagueiro De Sousa Dias, Amsterdam, NL;
Furanix Technologies B.V., Amsterdam, NL;
Abstract
A process for producing a carboxylic acid composition including 2,5-furandicarboxylic acid, including the steps: a) oxidizing an oxidizable compound including 5-alkoxymethylfurfural in an oxidation reactor in the presence of a saturated organic acid solvent having from 2 to 6 carbon atoms and a catalyst system comprising cobalt, manganese and bromine using an oxidizing gas at a temperature in the range of 160 to 210° C. to obtain a crude carboxylic acid composition including mono alkyl ester of 2,5-furandicarboxylic acid and solid 2,5-furandicarboxylic acid, b) isolating at least a portion of the solid 2,5-furandicarboxylic acid from the crude carboxylic acid composition in a solid-liquid separation zone to generate a solid cake and a mother liquor, c) determining the amount of manganese and/or cobalt in the cake, and d) increasing the amount of one or more controlling acids in the oxidation reactor.