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:
Jun. 23, 2009
Filed:
Mar. 08, 2005
Gino Georges Lavoie, Kingsport, TN (US);
Robert Thomas Hembre, Johnson City, TN (US);
Charles Edwan Sumner, Jr., Kingsport, TN (US);
Joseph Nathaniel Bays, Kingsport, TN (US);
Daniel Burts Compton, Kingsport, TN (US);
Brent Alan Tennant, Kingsport, TN (US);
Bryan Wayne Davenport, Columbia, SC (US);
David Lange, Irmo, SC (US);
Thomas Richard Floyd, Kingsport, TN (US);
Gino Georges Lavoie, Kingsport, TN (US);
Robert Thomas Hembre, Johnson City, TN (US);
Charles Edwan Sumner, Jr., Kingsport, TN (US);
Joseph Nathaniel Bays, Kingsport, TN (US);
Daniel Burts Compton, Kingsport, TN (US);
Brent Alan Tennant, Kingsport, TN (US);
Bryan Wayne Davenport, Columbia, SC (US);
David Lange, Irmo, SC (US);
Thomas Richard Floyd, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
Processes for producing aromatic dicarboxylic acids are disclosed, the processes including a step of combining in a reaction medium a dialkyl aromatic, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature from about 125° C. to about 155° C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the weight ratio of cobalt to manganese in the reaction mixture is from about 10 to about 400. The processes provide improved conversion, while reducing the formation of carbon oxides and other by-products.