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. 22, 1976
Filed:
Mar. 06, 1975
Applicant:
Inventors:
Kurt-Wilhelm Eichenhofer, Leverkusen, DT;
Reinhard Schliebs, Cologne, DT;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2602 / ; 2605 / ;
Abstract
A process for the production of a ketazine of the general formula ##EQU1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently is an alkyl, cycloalkyl or aralkyl radical with up to 12 carbon atoms; or an optionally substituted aryl radical with up to 10 carbon atoms, at most two of the radicals R.sub.1, R.sub.2, R.sub.3 and R.sub.4 being aryl radicals, or