Patents by Inventor Peter Konieczny

Peter Konieczny 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).

  • Patent number: 7851661
    Abstract: The present invention provides a process for preparing dinitrotoluene, comprising the steps of a) reacting toluene with nitric acid in the presence of sulphuric acid to give mononitrotoluene, b) separating the reaction product from step a) into an organic phase comprising mononitrotoluene and an aqueous phase comprising sulfuric acid, c) reacting the organic phase comprising mononitrotoluene with nitric acid in the presence of sulphuric acid to give dinitrotoluene, d) separating the reaction product from step c) into an organic phase comprising dinitrotoluene and an aqueous phase comprising sulfuric acid, wherein the reaction product from step a) has a content of toluene of from 3.0 to 8% by weight, based on the organic phase, and a content of nitric acid of from 0.1 to 1.2% by weight, based on the aqueous phase, and the phase separation in step b) is effected in such a way that further reaction of the toluene with the nitric acid is prevented.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: December 14, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Johannes Buettner, Wolfgang Mackenroth, Heinrich Hermann, Peter Konieczny, Juergen Gebauer
  • Patent number: 7632960
    Abstract: The present invention relates to a process for the preparation of nitric esters of monohydric alcohols wherein a monohydric alcohol or a mixture of monohydric alcohols is converted with nitric acid to the corresponding nitric esters under adiabatic reaction conditions in the presence of sulfuric acid.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: December 15, 2009
    Inventors: Jürgen Pöhlmann, Frank Pottharst, Heinrich Hermann, Peter Konieczny, Mirko Händel, Jürgen Gebauer
  • Patent number: 7470826
    Abstract: The invention relates to a process for removing and recovering nitrating acid mixtures, in particular nitric acid, sulphuric acid and oxides of nitrogen, from the nitrated crude products occurring in the nitration of nitratable aromatic compounds after the nitrating acid has been separated off, by acidic scrubbing by means of a multistage extraction process, the extraction process comprising a cross-current extraction with downstream countercurrent extraction. The process permits essentially complete recovery of the abovementioned acids, including the oxides of nitrogen, in high concentrations, so that they can be recycled to the nitration and no longer pollute the wastewater.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: December 30, 2008
    Assignee: Josef Meissner GmbH & Co. KG
    Inventors: Heinrich Hermann, Jürgen Gebauer, Peter Konieczny, Mirko Händel
  • Publication number: 20080242900
    Abstract: The invention relates to a method for producing dinitrotoluene, comprising the steps of a) reacting toluene with nitric acid in the presence of sulphuric acid to give mononitrotoluene, b) separating the reaction product of step a) into a mononitrotoluene-containing organic phase and a sulphuric acid-containing aqueous phase, c) reacting the mononitrotoluene-containing organic phase with nitric acid in the presence of sulphuric acid to give dinitrotoluene, d) separating the reaction product of step c) into a dinitrotoluene-containing organic phase and a sulphuric-acid containing aqueous phase, whereby the reaction product of step a) contains 3.0 to 8 wt % of toluene, in relation to the organic phase, and 0.1 to 1.2 wt. % of nitric acid, in relation to the aqueous phase and the phase separation of step b) is carried out in such a manner that further reaction of toluene with nitric acid is prevented.
    Type: Application
    Filed: February 2, 2005
    Publication date: October 2, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Johannes Buttner, Wolfgang Mackenroth, Heinrich Hermann, Peter Konieczny, Jurgen Gebauer
  • Publication number: 20070129563
    Abstract: The present invention relates to a process for the preparation of nitric esters of monohydric alcohols wherein a monohydric alcohol or a mixture of monohydric alcohols is converted with nitric acid to the corresponding nitric esters under adiabatic reaction conditions in the presence of sulfuric acid.
    Type: Application
    Filed: November 20, 2006
    Publication date: June 7, 2007
    Inventors: Jurgen Pohlmann, Frank Pottharst, Heinrich Hermann, Peter Konieczny, Mirko Handel, Jurgen Gebauer
  • Publication number: 20070088183
    Abstract: The invention relates to a process for removing and recovering nitrating acid mixtures, in particular nitric acid, sulphuric acid and oxides of nitrogen, from the nitrated crude products occurring in the nitration of nitratable aromatic compounds after the nitrating acid has been separated off, by acidic scrubbing by means of a multistage extraction process, the extraction process comprising a cross-flow extraction with downstream countercurrent extraction. The process permits essentially complete recovery of the abovementioned acids, including the oxides of nitrogen, in high concentrations, so that they can be recycled to the nitration and no longer pollute the wastewater.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 19, 2007
    Inventors: Heinrich Hermann, Jurgen Gebauer, Peter Konieczny, Mirko Handel