公开(公告)号：EP3333158B1

公开(公告)日：2019-12-18

申请号：EP17203810.1

申请日：2013-06-10

申请人： Eastman Chemical Company

发明人： Shaikh, Ashfaq Shahanawaz ,  Parker, Kenny Randolph ,  Partin, Lee Reynolds ,  Janke, Mesfin Ejerssa

IPC分类号： C07D307/46 ,  C07D307/68

公开(公告)号：EP3333158A1

公开(公告)日：2018-06-13

申请号：EP17203810.1

申请日：2013-06-10

申请人： Eastman Chemical Company

发明人： Shaikh, Ashfaq Shahanawaz ,  Parker, Kenny Randolph ,  Partin, Lee Reynolds ,  Janke, Mesfin Ejerssa

IPC分类号： C07D307/46 ,  C07D307/68

摘要： 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, in the absence of an esterification catalyst, 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).

公开(公告)号：EP3321260A1

公开(公告)日：2018-05-16

申请号：EP17203808.5

申请日：2013-06-10

申请人： Eastman Chemical Company

发明人： Janke, Mesfin Ejerssa ,  Sumner, Charles Edwan ,  Kirk, Shane Kipley ,  Shaikh, Ashfaq Shahanawaz ,  Parker, Kenny Randolph

IPC分类号： C07D307/68

CPC分类号： C07D307/68

摘要： A furan-2,5-dicarboxylic acid (FDCA) composition comprising:
a) solids, wherein at least 98 wt.% of the solids are FDCA;
b) 5-formyl furan-2-carboxylic acid (FFCA) in an amount of less than 500 ppm; and
c) tetrahydrofuran-2,5-dicarboxylic acid (THFDCA) in an amount ranging from greater than 0 to no more than 0.5 wt.%,
in each case based on the weight of the solids,
wherein the composition has a b value of less than 4.

摘要翻译： 呋喃-2,5-二羧酸（FDCA）组合物，其包含：a）固体，其中至少98重量％的固体是FDCA; b）量小于500ppm的5-甲酰基呋喃-2-羧酸（FFCA）; 和c）以大于0至不超过0.5重量％的量存在的四氢呋喃-2,5-二羧酸（THFDCA），在每种情况下基于固体的重量，其中所述组合物具有ab * 值小于4。