Patents by Inventor Joachim Hundeck

Joachim Hundeck 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 making 1,2-dichloroethane
    Patent number: 4774373
    Abstract: The disclosure relates to a process for making 1,2-dichloroethane by reacting ethylene with chlorine in a solvent in the presence of a catalyst, at a temperature of about 20.degree. to 200.degree. C. at atmospheric or elevated pressure, and distillatively separating the 1,2-dichloroethane from the chlorination mixture. The disclosure provides more particularly for the catalyst used to be an anhydrous tetrachloroferrate(1-) or a substance capable of forming a tetrachloroferrate(1-) in the reaction mixture.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: September 27, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Joachim Hundeck, Harald Scholz, Hans Hennen
  • Process for making 1,2-dichloroethane
    Patent number: 4672142
    Abstract: The disclosure relates to a process for making 1,2-dichloroethane by reacting ethylene and chlorine in a reaction zone having a liquid medium containing chlorinated C.sub.2 -hydrocarbons circulated therein. To this end, the disclosure provides:(a) for approximately equimolar proportions of ethylene and chlorine to be introduced into the circulated liquid medium; for the whole to be reacted in a reaction zone at a temperature of about 75.degree. up to 200.degree. C.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: June 9, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Joachim Hundeck, Harald Scholz, Hans Hennen, Bernhard Kuxdorf, Herbert Pusche