Patents by Inventor Franz Haunberger

Franz Haunberger 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 purifying hydrogen chloride from pyrolysis of 1,2-dichloroethane
    Patent number: 4986975
    Abstract: The invention is a multi-stage process for purifying hydrogen chloride containing acetylene and ethylene, from pyrolysis of 1,2-dichloroethane to provide highly pure hydrogen chloride for use in the preparation of silicon compounds. In the first stage, unsaturated by-products are chlorinated by reaction with an excess of chlorine gas. In the second stage, the unreacted chlorine gas remaining in the hydrogen chloride is reacted with an excess of defined olefins or chloroolefins and the hydrogen chloride is separated from the chlorination products and the excess olefins or chloroolefins by low-temperature rectification under pressure.
    Type: Grant
    Filed: May 5, 1989
    Date of Patent: January 22, 1991
    Assignee: Wacker-Chemie GmbH
    Inventors: Ludwig Schmidhammer, Peter Hirschmann, Klaus-Peter Mohr, Hermann Klaus, Franz Haunberger
  • Process for purification of HCl from pyrolysis of EDC
    Patent number: 4839153
    Abstract: In a process for the purification of hydrogen chloride from the pyrolysis of 1,2-dichloroethane, optionally after a preceding step of acetylene removal by selective hydrogenation under specific conditions followed by rectification of the resulting mixture to obtain hydrogen chloride containing at most 5 ppm of unsaturated hydrocarbons and at most 5 ppm of chlorinated hydrocarbons.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: June 13, 1989
    Assignee: Wacker-Chemie GmbH
    Inventors: Ludwig Schmidhammer, Gerhard Dummer, Peter Hirschmann, Rudolf Strasser, Franz Haunberger