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:
Jun. 30, 2015
Filed:
Jul. 25, 2007
Knut Sommer, Krefeld, DE;
Ido Schwarz, Düsseldorf, DE;
Susanne Buchholz, Köln, DE;
Franz-ulrich Von Gehlen, Krefeld, DE;
Andre Lago, Minghang District, CN;
Karl-heinz Wilke, Moers, DE;
Holger Orzesek, Gelsenkirchen-Buer, DE;
Hans-georg Pirkl, Leverkusen, DE;
Peter Lehner, Ratingen, DE;
Stephan Schubert, Leverkusen, DE;
Knut Sommer, Krefeld, DE;
Ido Schwarz, Düsseldorf, DE;
Susanne Buchholz, Köln, DE;
Franz-Ulrich Von Gehlen, Krefeld, DE;
Andre Lago, Minghang District, CN;
Karl-Heinz Wilke, Moers, DE;
Holger Orzesek, Gelsenkirchen-Buer, DE;
Hans-Georg Pirkl, Leverkusen, DE;
Peter Lehner, Ratingen, DE;
Stephan Schubert, Leverkusen, DE;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
Aromatic amines are produced by adiabatic hydrogenation of nitroaromatic compounds in the gas phase on one or more fixed catalysts. The nitroaromatic reactant is passed over the catalyst under pressure and at elevated temperature with hydrogen, water, optionally nitrogen and substantially in the absence of the aromatic amine produced from the nitroaromatic.