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:
Sep. 20, 2005
Filed:
Jan. 02, 2004
Applicants:
Adolf Sicheneder, Hohenlockstedt, DE;
Ulrich Scholz, Mülheim an der Ruhr, DE;
Joachim Haider, Köln, DE;
Inventors:
Adolf Sicheneder, Hohenlockstedt, DE;
Ulrich Scholz, Mülheim an der Ruhr, DE;
Joachim Haider, Köln, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C209/10 ;
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for the production of aminodiphenyl-amines, such as 4-aminodiphenylamine (4-ADPA), by reacting nitrohalogenated benzenes with anilines in the presence of a base as well as a copper-phosphorus complex, followed by hydrogenation of the intermediately formed nitrodiphenyl-amines.