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:
Feb. 05, 2008
Filed:
Mar. 01, 2006
Alan George Wonders, Kingsport, TN (US);
Ronald Buford Sheppard, Kingsport, TN (US);
Martin DE Boer, Borendrecht, NL;
Lee Reynolds Partin, Kingsport, TN (US);
Raymond Elbert Fogle, Johnson City, TN (US);
Alan George Wonders, Kingsport, TN (US);
Ronald Buford Sheppard, Kingsport, TN (US);
Martin De Boer, Borendrecht, NL;
Lee Reynolds Partin, Kingsport, TN (US);
Raymond Elbert Fogle, Johnson City, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. A solvent purification system is employed to remove of at least one aromatic impurity present in a solvent purification feed. At least about 20 weight percent of the solvent purification feed originates from a cooled, post-digestion, TPA-containing slurry.