Patent ID: 10087162

Abstract:
Dialkyil esters of 2,5-furandicarboxylic acid are prepared in a process including: contacting an acid starting composition having 2,5-furandicarboxylic acid with an excess of alkanol to form an esterification product having the dialkyil ester of 2,5-furan dicarboxylic acid, water and unreacted alkanol; separating at least part of the unreacted alkanol and water from the esterification product to yield a solid crude product composition having the dialkyil ester of 2,5-furandicarboxylic acid; and subjecting at least part of the solid crude product composition to an evaporation step, where the dialkyil ester of 2,5-furandicarboxylic acid is evaporated and subsequently condensed to yield purified dialkyil ester of 2,5-furandicarboxylic acid.