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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.:

US 6706924 B1

PDFFull Text
Date of Patent:
Mar. 16, 2004

Filed:

Dec. 18, 2001

Process for the production of 1,5-naphthalenediamine

Applicant:
Inventors:

Michael Schelhaas, Köln, DE;

Katrin Joschek, Köln, DE;

Manfred Jautelat, Burscheid, DE;

Joachim Zechlin, Düsseldorf, DE;

Dietmar Wastian, Dormagen, DE;

Assignee:

Bayer Aktiengesellschaft, Leverkusen, DE;

Attorney:

Joseph C. Gil

Primary Examiner:

Shailendra Kumar

Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
C07C / ; C07C / ;
Abstract

The invention relates to a process for the production of 1,5-naphthalenediamine and to the intermediates 4-(2-nitrophenyl)butyronitrile, 5-nitro-3,4-dihydro-1(2H)-naphthyl-imine, 5-nitroso-1-naphthylamine, 5-nitro-1-naphthylamine, 4-(2-aminophenyl)-butyronitrile, 5-amino-3,4-dihydro-1(2H)-naphthalene imine, 4-(2-nitrophenyl)ethyl butyrate and 4-(2-nitrophenyl)butyramide obtainable during the process.

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Schelhaas, Michael. (2004). Process for the production of 1,5-naphthalenediamine (U.S. Patent No. 6706924). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6706924

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