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:
Oct. 14, 2014
Filed:
Oct. 09, 2012
Applicant:
The Board of Trustees of the University of Alabama, Tuscaloosa, AL (US);
Inventors:
Robin D. Rogers, Tuscaloosa, AL (US);
Allan S. Myerson, Chicago, IL (US);
Christopher Corey Hines, Colfax, WA (US);
Assignee:
University of Alabama, Tuscaloosa, AL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/43 (2006.01); C09K 3/00 (2006.01);
U.S. Cl.
CPC ...
C09K 3/00 (2013.01); C07C 51/43 (2013.01);
Abstract
Disclosed herein is a process for purifying aryl carboxylic acids, in particular terephthalic acid, wherein the impure acid is dissolved or dispersed in an ionic liquid and a non-solvent is added to precipitate the purified acid. The present disclosure further relates to compositions comprising terephthalic acid and one or more ionic liquids.