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. 02, 2008
Filed:
Mar. 01, 2006
Polycarboxylic acid production system employing hot liquor removal downstream of oxidative digestion
Applicants:
Alan George Wonders, Kingsport, TN (US);
Ronald Buford Sheppard, Kingsport, TN (US);
Martin DE Boer, Barendrecht, NL;
Inventors:
Alan George Wonders, Kingsport, TN (US);
Ronald Buford Sheppard, Kingsport, TN (US);
Martin De Boer, Barendrecht, NL;
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 61/00 (2006.01); C07C 51/23 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes an optimized post-digestion cooling stage that provides a TPA product having enhanced purity, while minimizing costs associated with removing impurities from recycled solvent.