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:
Mar. 15, 2016
Filed:
Jul. 23, 2013
Applicant:
Bayer Materialscience Ag, Leverkusen, DE;
Inventors:
Thomas Knauf, Dormagen, DE;
Alexandre Racoes, Krefeld, DE;
Wolfgang Dohmen, Duisburg, DE;
Antoni Mairata, Dusseldorf, DE;
Assignee:
Bayer MaterialScience AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 201/00 (2006.01); C07C 201/06 (2006.01); C07C 201/08 (2006.01);
U.S. Cl.
CPC ...
C07C 201/06 (2013.01); C07C 201/08 (2013.01);
Abstract
The invention relates to an adiabatic process for producing nitrobenzene by nitrating benzene with sulphuric acid mixtures and nitric acid mixtures using a stoichiometric excess of benzene and reusing non-reacted benzene, the content of the aliphatic organic compounds in the feed benzene being limited, by the targeted evacuation of aliphatic organic compounds to at least one step in the process, to a content of less than 1.5 mass-%, in relation to the total amount of feed benzene.