Method for purifying crude 2,5-furandicarboxylic acid composition
AssigneeFar Eastern New Century Corporation
InventorsShu-Wei Liu, Xin-An Lu
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Abstract
A method for purifying a crude 2,5-furandicarboxylic acid composition including 2,5-furandicarboxylic acid and 2-furoic acid is disclosed. The method includes the steps of: (a) mixing the crude 2,5-furandicarboxylic acid composition with a solvent solution that includes alcohol so as to obtain a mixture; (b) heating the mixture to permit full dissolution of the crude 2,5-furandicarboxylic acid composition in the solvent solution; and (c) cooling the mixture to permit recrystallization of the 2,5-furandicarboxylic acid from the mixture so as to obtain purified 2,5-furandicarboxylic acid.
Claims6
A method for purifying a crude 2,5-furandicarboxylic acid composition, which includes 2,5-furandicarboxylic acid and 2-furoic acid, the method comprising the steps of:
- (a) mixing the crude 2,5-furandicarboxylic acid composition with a solvent solution that includes alcohol and water present in a weight ratio ranging from 5:1 to 5:5 to obtain a mixture;
- (b) heating the mixture to permit full dissolution of the crude 2,5-furandicarboxylic acid composition in the solvent solution;
- and
- (c) cooling the mixture to permit recrystallization of the 2,5-furandicarboxylic acid from the mixture, so as to obtain purified 2,5-furandicarboxylic acid.
Dependencies are inferred from the claim text.