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:
Nov. 24, 2015
Filed:
Dec. 07, 2011
Applicants:
Mahesh Ratnakar Sawant, Pune, IN;
Daniel M. Trauth, Crystal Lake, IL (US);
John G. Pendergast, Lake Jackson, TX (US);
Inventors:
Mahesh Ratnakar Sawant, Pune, IN;
Daniel M. Trauth, Crystal Lake, IL (US);
John G. Pendergast, Lake Jackson, TX (US);
Assignee:
ANGUS CHEMICAL COMPANY, Buffalo Grove, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/34 (2006.01); C07C 205/00 (2006.01); B01D 3/36 (2006.01); C07C 201/08 (2006.01); C07C 201/16 (2006.01);
U.S. Cl.
CPC ...
B01D 3/36 (2013.01); C07C 201/08 (2013.01); C07C 201/16 (2013.01);
Abstract
Disclosed are a process and an apparatus for concentrating an organic acid by using a nitroalkane as an entrainer for the azeotropic removal of water from an aqueous organic acid solution. The nitroalkane may be the same as a nitroalkane that is the product of a high pressure nitration process that produces nitroalkanes and aqueous organic acid.