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:
Nov. 13, 1984
Filed:
Apr. 05, 1984
Applicant:
Inventor:
Joseph E Toomey, Jr, Indianapolis, IN (US);
Assignee:
Reilly Tar & Chemical Corp., Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 74 ; 204 / ;
Abstract
Improved electrochemical reductions of cyanopyridine bases in which the reduction is performed by electrolysis in an ion-exchange membrane-divided flow cell at a lead dioxide cathode and in an aqueous or partly aqueous medium comprising sulfuric acid in at least a 1:1 mole ratio with the cyanopyridine base. In the case of 2- and 3- isomers, an iron salt is also added to the catholyte as a catalyst. In the case of the 4- isomer, an efficient, semi-continuous batch process is reported. With all bases, significant advantages of a commercial and industrial nature are reported over prior art static, beaker cell technology.