Patents by Inventor Ortmund Lang

Ortmund Lang 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 preparation of highly pure triethylene diamine
    Publication number: 20040220405
    Abstract: Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly pure solutions of triethylenediamine. Crystallization is generally unnecessary.
    Type: Application
    Filed: March 9, 2004
    Publication date: November 4, 2004
    Inventors: Ortmund Lang, Bernd Rumpf, Matthias Frauenkron, Thomas Manderbach, Bernd Stein
  • Isolation of high-purity triethylenediamine (TEDA) by distillation
    Publication number: 20040220406
    Abstract: Process for purifying triethylenediamine (TEDA) by disillation, in which the fractionation is carried out in a dividing wall column.
    Type: Application
    Filed: April 22, 2004
    Publication date: November 4, 2004
    Inventors: Ortmund Lang, Bernd Rumpf, Matthias Frauenkron, Marco Bosch, Helmut Berrsche, Anton Meier
  • Preparation of pure triethylenediamine
    Patent number: 6627756
    Abstract: Pure triethylenediamine (TEDA) is prepared by vaporizing TEDA, introducing the gaseous TEDA into a liquid solvent and subsequently crystallizing the TEDA from the solution obtained in this way.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: September 30, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Hartmut Riechers, Arthur Höhn, Joachim Simon, Ortmund Lang, Hartmut Schoenmakers, Matthias Rauls, Koen Claerbout
  • Process for the preparation of pure triethylenediamine (TEDA)
    Patent number: 6552194
    Abstract: The invention relates to the preparation of pure triethylenediamine (TEDA) by evaporating TEDA from the mixture comprising a solvent or diluent, where the solvent or diluent has a boiling point at atmospheric pressure in the range from 175 to 250° C., passing the vapor-form TEDA into a liquid solvent, and subsequently crystallizing the TEDA out of the resultant solution.
    Type: Grant
    Filed: January 3, 2002
    Date of Patent: April 22, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Ortmund Lang, Bernd Rumpf, Matthias Frauenkron, Dirk Funhoff, Thomas Manderbach, Bernd Stein
  • Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine
    Publication number: 20030004349
    Abstract: In a process for the purification of triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is passed into a liquid solvent and is subsequently crystallized from this, the mother liquor obtained after the TEDA has been crystallized is extracted with an extractant which is immiscible or only slightly miscible with the solvent of the mother liquor and in which TEDA is readily soluble, and the TEDA-depleted mother liquor obtained after extraction and/or the TEDA-enriched extractant which has been used for the extraction are/is returned to the process.
    Type: Application
    Filed: May 6, 2002
    Publication date: January 2, 2003
    Inventors: Ortmund Lang, Bernd Rumpf, Matthias Frauenkron, Dirk Funhoff, Thomas Manderbach, Bernd Stein
  • Process for the preparation of pure triethylenediamine (TEDA)
    Publication number: 20020156278
    Abstract: The invention relates to the preparation of pure triethylenediamine (TEDA) by evaporating TEDA from the mixture comprising a solvent or diluent, where the solvent or diluent has a boiling point at atmospheric pressure in the range from 175 to 250° C., passing the vapor-form TEDA into a liquid solvent, and subsequently crystallizing the TEDA out of the resultant solution.
    Type: Application
    Filed: January 3, 2002
    Publication date: October 24, 2002
    Inventors: Ortmund Lang, Bernd Rumpf, Matthias Frauenkron, Dirk Funhoff, Thomas Manderbach, Bernd Stein