公开(公告)号：US10053442B2

公开(公告)日：2018-08-21

申请号：US15525424

申请日：2015-11-10

Applicant: Synvina C.V.

Inventor： Ana Sofia Vagueiro De Sousa Dias ,  Benjamin McKay ,  Victor Peter Charles Vreeken ,  Johannes Maria Franciscus Sijben

IPC: C07D307/02 ,  C07D307/68

CPC classification number: C07D307/68

Abstract: Dialkyl esters of 2,5-furandicarboxylic acid are prepared from a 2,5-furandicarboxylic acid-containing starting material in a process, which includes: contacting a vaporous stream of an alkanol countercurrently with the at least partially liquid starting material having the 2,5-furandicarboxylic acid, in a reaction zone to conduct an esterification reaction to yield the dialkyl ester of 2,5-furandicarboxylic acid and water; withdrawing a reaction vapor comprising the alkanol and water from the reaction zone; and discharging a liquid phase having at least the dialkyl ester of 2,5-furandicarboxylic acid, from the bottom part of the reaction zone, to obtain the dialkyl ester of 2,5-furandicarboxylic acid.

公开(公告)号：US20170313670A1

公开(公告)日：2017-11-02

申请号：US15525424

申请日：2015-11-10

Applicant: Synvina C.V.

Inventor： Ana Sofia Vagueiro De Sousa Dias ,  Benjamin McKay ,  Victor Peter Charles Vreeken ,  Johannes Maria Franciscus Sijben

IPC: C07D307/68

CPC classification number: C07D307/68

Abstract: Dialkyl esters of 2,5-furandicarboxylic acid are prepared from a 2,5-furandicarboxylic acid-containing starting material in a process, which includes: contacting a vaporous stream of an alkanol countercurrently with the at least partially liquid starting material having the 2,5-furandicarboxylic acid, in a reaction zone to conduct an esterification reaction to yield the dialkyl ester of 2,5-furandicarboxylic acid and water; withdrawing a reaction vapor comprising the alkanol and water from the reaction zone; and discharging a liquid phase having at least the dialkyl ester of 2,5-furandicarboxylic acid, from the bottom part of the reaction zone, to obtain the dialkyl ester of 2,5-furandicarboxylic acid.

公开(公告)号：US10087162B2

公开(公告)日：2018-10-02

申请号：US15525426

申请日：2015-11-10

Applicant: Synvina C.V.

Inventor： Ana Sofia Vagueiro De Sousa Dias ,  Benjamin McKay ,  Victor Peter Charles Vreeken ,  Gerardus Johannes Maria Gruter ,  Johannes Maria Franciscus Sijben

IPC: C07D307/02 ,  C07D307/68

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.

公开(公告)号：US20170320845A1

公开(公告)日：2017-11-09

申请号：US15525426

申请日：2015-11-10

Applicant: Synvina C.V.

Inventor： Ana Sofia Vagueiro De Sousa Dias ,  Benjamin McKay ,  Victor Peter Charles Vreeken ,  Gerardus Johannes Maria Gruter ,  Johannes Maria Franciscus Sijben

IPC: C07D307/68

CPC classification number: C07D307/68 ,  C07B2200/13

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.