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. 13, 2015
Filed:
Mar. 24, 2014
Applicant:
Arkema Inc., King of Prussia, PA (US);
Inventor:
Steven G. Schon, Strafford, PA (US);
Assignee:
Arkema Inc., King of Prussia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/48 (2006.01); C07C 45/80 (2006.01);
U.S. Cl.
CPC ...
C07C 51/48 (2013.01); C07C 45/80 (2013.01);
Abstract
Improvement in separating lower carboxylic acids from aqueous streams via liquid-liquid extraction with pressurized liquefied propylene and/or propane, wherein carboxylic acid is transferred from the aqueous phase into the liquid solvent phase (extract). The extracted carboxylic acids are recovered as a liquid concentrate by evaporating off the propylene and/or propane solvent from the extract at mild temperatures.