Patents by Inventor Karl L. Moritz

Karl L. Moritz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Trisaminopyridines and method of preparation by reaction of diamino-2-chloro pyridinium salt and organic amine
    Patent number: 4156086
    Abstract: Trisaminopyridines of the formula ##STR1## are prepared by reacting a pyridinium salt of the formula ##STR2## with an organic amine having the formula R.sub.3 NH.sub.2 at a temperature of 110.degree. C. to 130.degree. C.;in whichX is --CN, --CONQ.sub.1 Q.sub.2 or --COOQ.sub.3 ;R is substituted or unsubstituted alkyl, cycloalkyl, aralkyl, or aryl;R.sub.1 is substituted or unsubstituted alkyl, aralkyl or aryl;Q.sub.1 and Q.sub.2 independently of one another are hydrogen, alkyl, cycloalkyl, aralkyl or aryl; or conjointly with the nitrogen atom form a 5-membered or 6-membered heterocyclic structure; andQ.sub.3 is alkyl or aralkyl.Where X is --CONQ.sub.1 Q.sub.2 or --COOQ.sub.3, the --CN group in the starting pyridinium salt is subsequently converted in the known manner to --CONQ.sub.1 Q.sub.2 or --COOQ.sub.3. The trisaminopyridines are useful as intermediates for preparation of azo dyestuffs by coupling with diazo components in the known manner.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: May 22, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl L. Moritz, Karl H. Schundehutte