The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2019
Filed:
Mar. 20, 2018
Applicant:
Eastman Chemical Company, Kingsport, TN (US);
Inventors:
Kevin John Fontenot, Jonesborough, TN (US);
Mesfin Ejerssa Janka, Kingsport, TN (US);
Kenny Randolph Parker, Afton, TN (US);
Ashfaq Shahanawaz Shaikh, Kingsport, TN (US);
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/02 (2006.01); C07D 307/68 (2006.01); B01D 19/00 (2006.01); B01D 3/00 (2006.01); C08G 63/66 (2006.01); C08G 63/672 (2006.01); C08G 63/78 (2006.01); B01D 3/06 (2006.01); B01D 5/00 (2006.01); B01D 8/00 (2006.01); C08G 63/181 (2006.01);
U.S. Cl.
CPC ...
C07D 307/68 (2013.01); B01D 3/002 (2013.01); B01D 3/06 (2013.01); B01D 5/003 (2013.01); B01D 8/00 (2013.01); B01D 19/0036 (2013.01); C08G 63/181 (2013.01); C08G 63/66 (2013.01); C08G 63/672 (2013.01); C08G 63/78 (2013.01); C08G 63/785 (2013.01);
Abstract
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.