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:
Sep. 09, 2014
Filed:
Aug. 27, 2009
Applicants:
Steven G. Schon, Strafford, PA (US);
Cecile V. Bertrand, Bagnois, FR;
Inventors:
Steven G. Schon, Strafford, PA (US);
Cecile V. Bertrand, Bagnois, FR;
Assignee:
Arkema Inc., King of Prussia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 11/04 (2006.01); C07C 45/80 (2006.01); C07C 51/48 (2006.01); B01D 3/00 (2006.01);
U.S. Cl.
CPC ...
C07C 51/48 (2013.01); C07C 45/80 (2013.01);
Abstract
Improvement in separating lower, C2 saturated and/or C3, and/or C4, saturated and/or unsaturated mono carboxylic acids from aqueous streams via extraction by using as the extractant an organic acid or ester or mixtures thereof with a melting point below 10° C., a normal boiling point between 190 and 280° C. and a Hildebrand solubility parameter between 8 and 11 calcm.