Patents by Inventor Werner Kunnel

Werner Kunnel 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).

  • Process for dyeing and printing cellulose fibres
    Patent number: 4249275
    Abstract: For dyeing and printing cellulose fibers swollen with water-miscible swelling agents or fibre blends containing these fibres, the fibres are treated with dyestuffs of the general formula ##STR1## wherein R.sub.1 represents aryl,R.sub.2 represents halogen, CN, CF.sub.3, NO.sub.2, Q.sub.1, --OQ.sub.1, --COOQ.sub.1, CONQ.sub.1 Q.sub.2 or --NHCOQ.sub.1,R.sub.3 represents H, halogen, CN, CF.sub.3, Q.sub.1 or --OQ.sub.1 andK represents the radical of a coupling component,whereinQ.sub.1 denotes alkyl or aryl andQ.sub.2 denotes hydrogen, alkyl or aralkyl,and the dyestuffs are fixed by heat treatment.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: February 10, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Hugl, Gerhard Wolfrum, Henning Reel, Werner Kunnel, Robert Kuth, Wilhelm Gohrbandt