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:
Aug. 16, 2016
Filed:
Dec. 30, 2010
Jerry Allan Barron, Gray, TN (US);
Brandon Tyler Earls, Kingsport, TN (US);
Carl Franklin Fillers, Greeneville, TN (US);
Robert Sterling Kline, Kingsport, TN (US);
Gregory Abbott Wellman, Jr., Kingsport, TN (US);
Jerry Allan Barron, Gray, TN (US);
Brandon Tyler Earls, Kingsport, TN (US);
Carl Franklin Fillers, Greeneville, TN (US);
Robert Sterling Kline, Kingsport, TN (US);
Gregory Abbott Wellman, Jr., Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
The invention provides processes for purification of streams containing carboxylic acids and carboxylic acid anhydrides without using the amount of high-cost, corrosion resistant alloy required for a distillation column. The invention provides methods in which streams containing carboxylic acids and carboxylic acid anhydrides are subjected to a hydrolysis process by combining them with a stoichiometric excess of water and optionally an added hydrolysis catalyst. The resulting hydrolyzed stream is subsequently separated to produce a stream containing carboxylic acid and water and a carboxylic acid product stream comprising carboxylic acid.