公开(公告)号：US20150087860A1

公开(公告)日：2015-03-26

申请号：US14034621

申请日：2013-09-24

申请人： Ashfaq Shahanawaz Shaikh ,  David Milton Lange ,  William Lee Cook ,  Mesfin Ejerssa Janka

发明人： Ashfaq Shahanawaz Shaikh ,  David Milton Lange ,  William Lee Cook ,  Mesfin Ejerssa Janka

IPC分类号： C07C51/265

CPC分类号： C07C51/265 ,  C07C63/24

摘要： Processes for producing isophthalic acid are disclosed, the processes including a step of combining in a reaction medium meta-xylene, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature for example from about 145° C. to about 175° C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the zirconium is present in the reaction medium in an amount, for example, from about 1 ppm to 50 ppm with respect to the weight of the liquid in the reaction medium.

摘要翻译： 公开了制备间苯二甲酸的方法，该方法包括在反应介质中间二甲苯，包含水和具有2-4个碳原子的饱和有机酸的溶剂和含氧气体在一定温度下混合的步骤 例如约145℃至约175℃，在包含钴，锰，锆和溴的催化剂组合物存在下，其中锆以反应介质的形式存在，其量例如为约 相对于反应介质中液体的重量为1ppm至50ppm。

公开(公告)号：US20190023677A1

公开(公告)日：2019-01-24

申请号：US15925867

申请日：2018-03-20

申请人： KEVIN JOHN FONTENOT ,  Mesfin Ejerssa Janka ,  Kenny Randolph Parker ,  Ashfaq Shahanawaz Shaikh

发明人： KEVIN JOHN FONTENOT ,  Mesfin Ejerssa Janka ,  Kenny Randolph Parker ,  Ashfaq Shahanawaz Shaikh

IPC分类号： C07D307/68 ,  B01D3/00 ,  B01D19/00

CPC分类号： C07D307/68 ,  B01D3/002 ,  B01D3/06 ,  B01D5/003 ,  B01D8/00 ,  B01D19/0036 ,  C08G63/181 ,  C08G63/66 ,  C08G63/672 ,  C08G63/78 ,  C08G63/785

摘要： Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.