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:
Jul. 11, 2006
Filed:
Aug. 21, 2003
Ronald Buford Sheppard, Voorburg, NL;
Brent Alan Tennant, Kingsport, TN (US);
Thomas Earl Woodruff, Kingsport, TN (US);
Robert Lin, Kingsport, TN (US);
Ronald Buford Sheppard, Voorburg, NL;
Brent Alan Tennant, Kingsport, TN (US);
Thomas Earl Woodruff, Kingsport, TN (US);
Robert Lin, Kingsport, TN (US);
Eastman Chemical Company, Kingsport, TN (US);
Abstract
Disclosed is a process to produce a purified carboxylic acid slurry. The process comprises removing impurities from a crystallized product in a solid liquid displacement zone to form the purified carboxylic acid slurry. The process produces purified carboxylic acid slurry having good color and low impurity levels without the use of purification steps like hydrogenation or an impurity removal process.