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:
Aug. 24, 1982
Filed:
Jun. 04, 1980
Applicant:
Inventors:
Hans de Groot, Nuenen, NL;
Eeuwoud van den Heuvel, Helmond, NL;
Embrecht Barendrecht, Veldhoven, NL;
Leonard J Janssen, Nuenen, NL;
Assignee:
Borma B.V., , NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 74 ;
Abstract
A method and apparatus for preparing aromatic hydrazo compounds by electrochemical reduction of aromatic nitro compounds on a technical scale. The reaction is carried out continuously and in two steps, comprising a first step in which the aromatic nitro compounds are reduced to form the corresponding azoxy compounds, which are isolated, and a second step in which the azoxy compounds isolated are reduced to form the corresponding hydrazo compounds.