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:
Jan. 12, 2016
Filed:
Oct. 17, 2011
Applicants:
Peter Lehner, Baytown, TX (US);
Knut Sommer, Krefeld, DE;
Amgad Salah Moussa, Köln, DE;
Inventors:
Assignee:
BAYER INTELLECTUAL PROPERTY GMBH, Monheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/00 (2006.01); C07C 209/86 (2006.01); C07C 209/84 (2006.01);
U.S. Cl.
CPC ...
C07C 209/86 (2013.01); C07C 209/84 (2013.01);
Abstract
The invention relates to a process for purifying aniline produced by gas-phase hydrogenation of nitrobenzene, by fractional condensation of the crude reaction product obtained in gaseous form so that at least two liquid process products, a partial condensate (PK) and a total condensate (TK), are obtained.