公开(公告)号：US09029581B2

公开(公告)日：2015-05-12

申请号：US14491514

申请日：2014-09-19

Applicant: Eastman Chemical Company

Inventor： Lee Reynolds Partin ,  Ashfaq Shaikh ,  Mesfin Ejerssa Janka ,  Kenny Randolph Parker

IPC: C07D307/68

CPC classification number: C07D307/68

Abstract: A process for the manufacture of dialkyl furan-2,5-dicarboxylate (DAFD) vapor composition by feeding furan-2,5-dicarboxylic acid (“FDCA”) to an esterification reactor and in the presence of an alcohol compound such as methanol, conducting an esterification reaction to form an esterification vapor containing DAFD, unreacted alcohol compound, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and water, and continuously passing the esterification vapor through an ACFC condensing zone, that can be integral with the esterification reactor, in which at least a portion of the ACFC in the esterification vapor is converted to a liquid phase condensate, and continuously discharging the esterification vapor from the ACFC condensing zone as a DAFD vapor. There is also a DAFD vapor composition containing DAFD, water, unreacted alcohol, and by-products.

Abstract translation: 通过将呋喃-2,5-二羧酸（“FDCA”）加入到酯化反应器中并在醇化合物例如甲醇存在下制备呋喃-2,5-二羧酸二烷基酯（DAFD）蒸气组合物的方法， 进行酯化反应以形成含有DAFD，未反应的醇化合物，5-（烷氧基羰基）呋喃-2-羧酸（ACFC）和水的酯化蒸气，并连续使酯化蒸气通过ACFC冷凝区，其可以是积分的 酯化反应器中，将酯化蒸气中的至少一部分ACFC转化为液相冷凝物，并且将作为DAFD蒸气的来自ACFC冷凝区的酯化蒸气连续排出。 还有一种含有DAFD，水，未反应的醇和副产物的DAFD蒸汽组合物。

公开(公告)号：US20150065735A1

公开(公告)日：2015-03-05

申请号：US14536387

申请日：2014-11-07

Applicant: Eastman Chemical Company

Inventor： Kenny Randolph Parker ,  Ashfaq Shaikh ,  Lee Raynolds Parton ,  Mesfin Ejerssa Janka

IPC: C07D307/68

CPC classification number: C07D307/68 ,  C07D307/46

Abstract: A process to produce a purified dimethyl-furan-2,5-dicarboxylate (DMFD) by feeding furan dicarboxylic acid and methanol to an esterification zone to generate a crude diester composition, and purifying the crude diester composition with a physical separation process followed by crystallization, solid liquid separation, and optionally drying to produce a purified DMFD composition. A portion of the stream generated by solid liquid separation can be dissolved and subjected to crystallization and solid liquid separation repeatedly. The process is useful to produce a purified DMFD composition having a low b*, at least 98 wt. % DAFD solids, and a low concentration of 5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) and methyl 5-formylfuran-2-carboxylate (MFFC).

Abstract translation: 通过将呋喃二甲酸和甲醇加入到酯化区以产生粗制二酯组合物，并通过物理分离方法纯化粗二酯组合物，然后结晶，从而生产纯化的二甲基 - 呋喃-2,5-二羧酸二甲酯（DMFD） ，固液分离，任选地干燥以制备纯化的DMFD组合物。 通过固液分离产生的一部分流可以溶解并重复进行结晶和固液分离。 该方法可用于生产具有低b *，至少98重量％的纯化的DMFD组合物。 ％DAFD固体，低浓度的5-（甲氧羰基）呋喃-2-羧酸（MCFC）和5-甲酰呋喃-2-羧酸甲酯（MFFC）。

公开(公告)号：US20150031903A1

公开(公告)日：2015-01-29

申请号：US14491514

申请日：2014-09-19

Applicant: Eastman Chemical Company

Inventor： Lee Reynolds Partin ,  Ashfaq Shaikh ,  Mesfin Ejerssa Janka ,  Kenny Randolph Parker

IPC: C07D307/68

CPC classification number: C07D307/68

Abstract: A process for the manufacture of dialkyl furan-2,5-dicarboxylate (DAFD) vapor composition by feeding furan-2,5-dicarboxylic acid (“FDCA”) to an esterification reactor and in the presence of an alcohol compound such as methanol, conducting an esterification reaction to form an esterification vapor containing DAFD, unreacted alcohol compound, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and water, and continuously passing the esterification vapor through an ACFC condensing zone, that can be integral with the esterification reactor, in which at least a portion of the ACFC in the esterification vapor is converted to a liquid phase condensate, and continuously discharging the esterification vapor from the ACFC condensing zone as a DAFD vapor. There is also a DAFD vapor composition containing DAFD, water, unreacted alcohol, and by-products.

Abstract translation: 通过将呋喃-2,5-二羧酸（“FDCA”）加入到酯化反应器中并在醇化合物例如甲醇存在下制备呋喃-2,5-二羧酸二烷基酯（DAFD）蒸气组合物的方法， 进行酯化反应以形成含有DAFD，未反应的醇化合物，5-（烷氧基羰基）呋喃-2-羧酸（ACFC）和水的酯化蒸气，并连续使酯化蒸气通过ACFC冷凝区，其可以是积分的 酯化反应器中，将酯化蒸气中的至少一部分ACFC转化为液相冷凝物，并且将作为DAFD蒸气的来自ACFC冷凝区的酯化蒸气连续排出。 还有一种含有DAFD，水，未反应的醇和副产物的DAFD蒸汽组合物。