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:
Feb. 17, 2015
Filed:
May. 31, 2011
Applicants:
Wolfgang Tietz, Biendorf, DE;
Joachim Schulze, Soest, DE;
Inventors:
Wolfgang Tietz, Biendorf, DE;
Joachim Schulze, Soest, DE;
Assignee:
Thyssenkrupp UHDE GmbH, Dortmund, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/42 (2006.01); C07C 51/00 (2006.01); C07C 51/43 (2006.01); C07B 63/00 (2006.01); C07C 51/47 (2006.01); C12P 7/44 (2006.01); C12P 7/46 (2006.01);
U.S. Cl.
CPC ...
C07C 51/43 (2013.01); C07B 63/00 (2013.01); C07C 51/42 (2013.01); C07C 51/47 (2013.01); C12P 7/44 (2013.01); C12P 7/46 (2013.01);
Abstract
A process for removing, isolating and purifying dicarboxylic acid from fermentation broths, which includes the following steps: 1) removal of the biomass and any solids present from the fermentation broth in two successive stages, 2) removal of the dicarboxylic acid solution from the biomass-free fermentation broth by simulated moving bed (SMB) chromatography, 3) fine purification of the dicarboxylic acid solution, 4) multistage evaporative concentration and crystallization, and 5) separation and drying of the crystals.