Patents by Inventor Manfred Stoger

Manfred Stoger 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 1,2-dichloroethane
    Patent number: 7309804
    Abstract: A process for the preparation of 1,2-dichloroethane that is very pure with respect to chloral or/and chloral hydrate and carbon dioxide is described herein. The process comprises oxychlorination of ethylene, using hydrogen chloride and an oxygen-containing gas, and alkali treatment of the 1,2-dichloroethane produced. In the process, the carbon dioxide present in the 1,2-dichloroethane-containing organic phase is, in accordance with the invention, substantially separated out from the 1,2-dichloroethane-containing organic phase before the alkali treatment.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: December 18, 2007
    Assignees: Vinnolit Technologie GmbH & Co., Vintron GmbH
    Inventors: Helmut Grumann, Manfred Stoger, Jurgen Eichler, Dieter Jaculi, Winfried Lork, Arend Greve, Jan Wilkens, Peter Kammerhofer, Hermann Tropp
  • Process for purifying 1,2-dichloroethane
    Publication number: 20030055301
    Abstract: A process for the preparation of 1,2-dichloroethane that is very pure with respect to chloral or/and chloral hydrate and carbon dioxide is described herein. The process comprises oxychlorination of ethylene, using hydrogen chloride and an oxygen-containing gas, and alkali treatment of the 1,2-dichloroethane produced. In the process, the carbon dioxide present in the 1,2-dichloroethane-containing organic phase is, in accordance with the invention, substantially separated out from the 1,2-dichloroethane-containing organic phase before the alkali treatment.
    Type: Application
    Filed: October 25, 2002
    Publication date: March 20, 2003
    Inventors: Helmut Grumann, Manfred Stoger, Jurgen Eichler, Dieter Jaculi, Winfried Lork, Arend Greve, Jan Wilkens, Peter Kammerhofer, Hermann Tropp
  • Method for producing 1,2-dichloroethane
    Publication number: 20030004380
    Abstract: A process for the preparation of 1,2-dichloroethane that is very pure with respect to chloral or/and chloral hydrate and carbon dioxide is described herein. The process comprises oxychlorination of ethylene, using hydrogen chloride and an oxygen-containing gas, and alkali treatment of the 1,2-dichloroethane produced. In the process, the carbon dioxide present in the 1,2-dichloroethane-containing organic phase is, in accordance with the invention, substantially separated out from the 1,2-dichloroethane-containing organic phase before the alkali treatment.
    Type: Application
    Filed: July 10, 2002
    Publication date: January 2, 2003
    Inventors: Helmut Grumann, Manfred Stoger, Jurgen Eichler, Dieter Jaculi, Winfried Lork, Arend Greve, Jan Wilkens
  • Process and apparatus for preparing 1,2-dichloroethane by direct chlorination
    Patent number: 6204419
    Abstract: Process and apparatus for preparing 1,2-Dichloroethane by direct chlorination If in the reaction of ethylene with chlorine to form 1,2-dichloroethane (EDC) the catalyst components sodium chloride and iron(III) chloride are used in a molar ratio of below 0.5, then the EDC is obtained in sufficiently high purity to allow direct conversion to vinyl chloride. With maintenance of the stated molar ratio the reaction can be carried out very advantageously in terms of equipment and energy consumption, for example by vaporizing some of the EDC in an expansion vessel.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 20, 2001
    Assignee: Vinnolit Technologie GmbH & Co. KG
    Inventors: Jürgen Eichler, Reinhard Krumböck, Wenzel Kühn, Peter Schwarzmaier, Thomas Wild, Rudolf Spielmannleitner, Manfred Stöger, Ingolf Mielke
  • Process for the preparation of vinyl chloride
    Patent number: 5545780
    Abstract: The conversion rate in the preparation of vinyl chloride by thermal cracking of 1,2-dichloroethane is determined by measuring the absorption of high-energy radiation, the pressure and the temperature of the gases issuing from the cracking furnace.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: August 13, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Schwarzmaier, Peter Hackl, Manfred Stoger, Ingolf Mielke
  • Process and apparatus for purifying vinyl chloride
    Patent number: 5507920
    Abstract: In the preparation of vinyl chloride by thermal cracking of 1,2-dichloroethane, three distillation stages are used to distill off first hydrogen chloride, then vinyl chloride and finally entrained hydrogen chloride with vinyl chloride. If, in the last stage, entrained water is not drawn off via the bottom, it is recirculated with the top product to the first stage and causes corrosion. Removal of the water at the top of the third distillation stage, advantageously by drying, prevents the corrosion.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 16, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Schwarzmaier, Peter Kammerhofer, Manfred Stoger, Helmut Kalliwoda, Ingolf Mielke