Patents by Inventor Ulrich Schnegg

Ulrich Schnegg 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 the halogenation of organic compounds
    Patent number: 4489210
    Abstract: The invention relates to a process for the halogenation of organic compounds in the liquid phase using gaseous halogenating agents, the gaseous halogenating agents being metered into the reaction vessel at such an entry velocity that a gas jet is formed in the reaction mixture at the point of entry of the halogenating agent and the formation of individual gas bubbles at the point of entry is prevented.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: December 18, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Judat, Ulrich Schnegg, Karlfried Wedemeyer
  • Process for the preparation of 4-chloro-2,6-dialkylanilines
    Patent number: 4401833
    Abstract: Process for the preparation of 4-chloro-2,6-dialkylanilines, characterized in that the ammonium salts of the 2,6-dialkylanilines are reacted with a chlorination agent at -15.degree. to 100.degree. C. in the presence of an inert organic solvent and/or diluent and, if necessary, the presence of Friedel-Crafts catalysts, and 4-chloro-2,6-dialkylaniline is then liberated from the 4-chloro-2,6-dialkylanilinium salt obtained.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: August 30, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Schnegg, Karlfried Wedemeyer