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. 06, 2015
Filed:
Mar. 14, 2013
Applicant:
Invista North America S.a.r.l., Wilmington, DE (US);
Inventor:
Alan Macpherson Ure, Cleveland, GB;
Assignee:
INVISTA North America S.a.r.l., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/36 (2006.01); C07C 51/46 (2006.01); C07C 7/00 (2006.01); B01D 3/42 (2006.01);
U.S. Cl.
CPC ...
B01D 3/36 (2013.01); C07C 7/005 (2013.01); C07C 51/46 (2013.01); B01D 3/42 (2013.01);
Abstract
Disclosed is a process for the separation of water from a liquid phase medium containing an aliphatic carboxylic acid using azeotropic distillation in the presence of an entrainer. The entrainer, water, and organics are subsequently separated, wherein the entrainer is recycled back to the azeotropic distillation column and organics recycled back to the oxidation reactor.