Patents by Inventor Torsten Mattke

Torsten Mattke 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: 8329951
    Abstract: The invention provides a process for preparing diphenylmethanediamine, comprising the steps of a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the acid with ammonia, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) treating the aqueous phase obtained in step c) with an oxide or hydroxide of an alkaline earth metal, e) separating off the ammonia obtained in step d).
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: December 11, 2012
    Assignee: BASF SE
    Inventors: Veronika Wloka, Torsten Mattke, Daniel Breuninger, Markus Siegert
  • Patent number: 8288584
    Abstract: The present invention relates to a process for preparing diisocyanates from diamines and phosgene in the gas phase.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: October 16, 2012
    Assignee: BASF SE
    Inventors: Carsten Knoesche, Andreas Woelfert, Torsten Mattke, Eckhard Stroefer, Heinrich-Josef Blankertz, Bernhard Geissler
  • Publication number: 20120251435
    Abstract: A process is proposed for preparing isocyanates by phosgenating the corresponding amines in the gas phase, which comprises dividing a phosgene-containing reaction mixture from the gas phase synthesis of carbon monoxide and chlorine to phosgene, which is run with a stoichiometric carbon monoxide excess over chlorine, by means of a thermal separating process and/or of a membrane separating process into two streams, specifically into a first, low-carbon monoxide stream comprising not more than 1% by weight of carbon monoxide, based on the total weight of the first, low-carbon monoxide stream, and into a second, carbon monoxide-rich stream comprising more than 10% by weight of carbon monoxide, based on the total weight of the second, carbon monoxide-rich stream, and using the first, low-carbon monoxide stream as a reactant stream in the phosgenation of amines to isocyanates in the gas phase.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 4, 2012
    Applicant: BASF SE
    Inventors: Vanessa Simone LEHR, Torsten Mattke, Carsten Knösche, Heiner Schelling, Gerhard Olbert
  • Publication number: 20120253072
    Abstract: The invention relates to a process for the preparation of formamides by reacting aromatic amines with a formic acid ester in the presence of a catalyst, wherein the catalyst is a phosphorus-containing acid or a Lewis-acidic metal salt.
    Type: Application
    Filed: December 1, 2010
    Publication date: October 4, 2012
    Applicant: BASF SE
    Inventors: Axel Franzke, Torsten Mattke, Julia Leschinski, Radwan Abdallah, Michael Bock, Robert Baumann, Eckhard Stroefer
  • Publication number: 20120253063
    Abstract: Process for preparing aromatic isocyanates by reacting the corresponding formamides with an oxygen-comprising gas over noble metal catalysts at temperatures of from 300 to 600° C. and a contact time of from 1 to 1000 ms, wherein: a. the formamide is vaporized before entering the reaction zone, b. the reaction mixture obtained is quenched with an alcohol-comprising quenching liquid and c. the urethane formed is dissociated into isocyanate and alcohol.
    Type: Application
    Filed: December 3, 2010
    Publication date: October 4, 2012
    Applicant: BASF SE
    Inventors: Torsten Mattke, Eckhard Stroefer, Julia Leschinski, Radwan Abdallah, Axel Franzke, Michael Bock
  • Publication number: 20120232307
    Abstract: The invention provides a process for preparing diphenylmethanediamine, comprising the steps of: a) reacting aniline with formaldehyde in the presence of an acid, b) neutralizing the predominant part of the acid with ammonia and/or aqueous ammonia solution, c) separating the reaction mixture from step b) into an aqueous phase and an organic phase, d) neutralizing the other part of the acid, present in the organic phase, with aqueous alkali metal hydroxide solution, e) separating the reaction mixture from step d) into an aqueous phase and an organic phase, f) treating the aqueous phase obtained in step c) or optionally the combined aqueous phases from steps c) and e) with at least one oxide or hydroxide of an alkaline earth metal, g) removing the ammonia obtained in step f).
    Type: Application
    Filed: December 13, 2010
    Publication date: September 13, 2012
    Applicant: BASF SE
    Inventors: Markus Siegert, Torsten Mattke, Tilmann Steinmetz, Hans-Juergen Pallasch, Filip Nevejans
  • Publication number: 20120226071
    Abstract: The present invention relates to a process for preparing polyisocyanates comprising biuret groups from diisocyanates or polyisocyanates and diamines.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 6, 2012
    Applicant: BASF SE
    Inventors: Julia Leschinski, Torsten Mattke, Gerrit Waters, Horst Binder, Harald Schäfer, Matthias Kroner, Alexander Bayer
  • Publication number: 20120226073
    Abstract: The subject of the present invention is an apparatus for the intermixing of a fluid stream with a fluid stream, which comprises a pipe through which the fluid stream is routed, at least two distributors for delivering the fluid stream being arranged inside the pipe, this arrangement of the distributors being made possible by bores in the casing of the pipe, and these distributors having a free flow cross section which is constant or decreases continuously, as seen in the main direction of flow of the fluid, and the distributors having one or more rows of holes for delivering the fluid into the fluid.
    Type: Application
    Filed: February 28, 2012
    Publication date: September 6, 2012
    Applicant: BASF SE
    Inventors: Kerstin Heinen, Stefan Karbach, Burkhardt Dames, Wolfgang Haip, Wolfgang Gerlinger, Torsten Mattke
  • Patent number: 8258337
    Abstract: The present invention relates to a process for preparing isocyanates and an apparatus suitable for this purpose, and also its use. In the process, an amine and phosgene, both in the gas phase, react in the presence of an inert medium. A number, n, of amine streams are reacted with a number, n +1, of phosgene streams in a reactor. The number n is a positive integer of at least 1. All amine and phosgene streams are introduced into the reactor through annular gaps for mixing.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: September 4, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Woelfert, Carsten Knoesche, Andreas Daiss, Tsung-Chieh Cheng, Torsten Mattke, Eckhard Stroefer
  • Publication number: 20120172621
    Abstract: The invention relates to a multistage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic polyamines with carbonic acid derivatives and alcohols to form low molecular weight monomeric polyurethanes and thermal dissociation of the latter, in which the polyisocyanates produced and unusable residues are separated off at particular stages of the reaction and reusable by-products and intermediates are recirculated to preceding stages.
    Type: Application
    Filed: September 9, 2010
    Publication date: July 5, 2012
    Applicant: BASF SE
    Inventors: Torsten Mattke, Matthias Kloetzer, Eckhard Stroefer, Bernhard Geissler, Peter Zehner
  • Publication number: 20120157722
    Abstract: The present invention relates to a process for continuously preparing a mononitrated organic compound, especially a process for preparing mononitrobenzene. The invention relates more particularly to an improved continuous adiabatic process for preparing nitrobenzene.
    Type: Application
    Filed: August 20, 2010
    Publication date: June 21, 2012
    Applicant: BASF SE
    Inventors: Leo Denissen, Eckhard Stroefer, Jan-Dirk Arndt, Torsten Mattke, Kerstin Heinen, Julia Leschinski
  • Publication number: 20120142959
    Abstract: A process for preparing diisocyanates by gas-phase phosgenation starting out from a feed stream comprising the corresponding diamines and a phosgene-comprising feed stream, in which the feed streams are separately converted into the gas phase and preheated to the reaction temperature of the gas-phase phosgenation, wherein the waste heat from a plant for preparing chlorine by heterogeneously catalyzed oxidation of hydrogen chloride by the Deacon process is utilized for this purpose, is proposed.
    Type: Application
    Filed: August 10, 2010
    Publication date: June 7, 2012
    Applicant: BASF SE
    Inventors: Torsten Mattke, Gerhard Olbert, Carsten Knoesche, Heiner Schelling
  • Patent number: 8173833
    Abstract: The present invention relates to a process for preparing isocyanates.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: May 8, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Woelfert, Andreas Daiss, Torsten Mattke
  • Publication number: 20120095255
    Abstract: Process for preparing isocyanates by reacting the corresponding amines with phos-gene comprising (a) providing at least one amine-comprising feed stream and at least one phosgene-comprising feed stream, (b) mixing the feed streams to form at least one reaction mixture in a mixing zone, (c) reacting the at least one reaction mixture in a reaction zone and (d) working-up the product mixture obtained from (c).
    Type: Application
    Filed: October 14, 2011
    Publication date: April 19, 2012
    Applicant: BASF SE
    Inventors: Torsten Mattke, Gerhard Olbert
  • Publication number: 20120016154
    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, if appropriate in the presence of an inert medium, in which the amine and the phosgene are first mixed and converted to the isocyanate in a reactor, and in which a reaction gas which comprises isocyanate and hydrogen chloride and leaves the reactor is cooled in a quench space of a quench by adding a quench medium. The quench medium on addition to the quench space has a temperature above the condensation temperature or the desublimation temperature of the reaction gas.
    Type: Application
    Filed: October 8, 2009
    Publication date: January 19, 2012
    Applicant: BASF SE
    Inventors: Torsten Mattke, Carsten Knoesche
  • Publication number: 20120004445
    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene, optionally in the presence of an inert medium, in which phosgene and amine are first mixed and converted to the isocyanate in a reactor, and in which a reaction gas which comprises isocyanate and hydrogen chloride leaving the reactor is cooled in a quench by adding a liquid quench medium to form a mixture of reaction gas and quench medium as the product stream. The walls of the quench are essentially completely wetted with a liquid.
    Type: Application
    Filed: April 7, 2010
    Publication date: January 5, 2012
    Applicant: BASF SE
    Inventors: Vanessa Simone Lehr, Carsten Knoesche, Torsten Mattke
  • Publication number: 20120004446
    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, optionally in the presence of an inert medium, in which phosgene and amine are first evaporated and then superheated further to reaction temperature, and the superheated phosgene and amine are mixed and fed to a reactor in which the phosgene and the amine are converted to the isocyanate, wherein the residence time of the phosgene at temperatures greater than 300° C. is not more than 5 s, and/or the temperature of heat transfer surfaces in contact with phosgene is not more than 20 K above the phosgene temperature to be established. The invention further relates to an apparatus for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase.
    Type: Application
    Filed: March 18, 2010
    Publication date: January 5, 2012
    Applicant: BASF SE
    Inventors: Torsten Mattke, Carsten Knoesche, Bernd Rumpf, Eckhard Stroefer
  • Publication number: 20110301380
    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, optionally in the presence of an inert medium, in which the amine is evaporated in an evaporator to give an amine-comprising gas stream, the phosgene is mixed into the amine-comprising gas stream, and the amine and the phosgene are converted to the isocyanate in a reactor, wherein the temperature of surfaces in contact with the gaseous amine is kept above the dew point limit of the amine-comprising gas stream.
    Type: Application
    Filed: March 4, 2010
    Publication date: December 8, 2011
    Applicant: BASF SE
    Inventors: Carsten Knoesche, Torsten Mattke
  • Publication number: 20110257428
    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the gas phase, optionally in the presence of an inert medium, in which the amine and the phosgene are first mixed and converted to the isocyanate in a reactor, and in which a reaction gas (1) which comprises isocyanate and hydrogen chloride leaving the reactor is cooled in a quench (3) by adding a liquid quench medium (5) to form a mixture of reaction gas and quench medium as the product stream (7). The quench medium (5) used is a mixture which comprises at least one solvent and isocyanate and which is withdrawn from the preparation process, any solid particles present in the quench medium (5) being removed before addition to the quench (3).
    Type: Application
    Filed: November 30, 2009
    Publication date: October 20, 2011
    Applicant: BASF SE
    Inventors: Carsten Knoesche, Torsten Mattke, Patric Mueller
  • Publication number: 20110251425
    Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber (1) to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice (3) arranged coaxially to the mixing chamber (1) and the phosgene being added through feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1), or the phosgene being added through the orifice (3) arranged coaxially to the mixing chamber and the amine through the feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1). At least one plane (9) is arranged upstream and at least one plane (7) downstream of the orifice (3) arranged coaxially to the mixing chamber (1) in main flow direction of the reaction mixture.
    Type: Application
    Filed: August 6, 2009
    Publication date: October 13, 2011
    Applicant: BASF SE
    Inventors: Ulrich Penzel, Torsten Mattke, Andreas Wolfert, Johannes Jocobs, Tsung-Chieh Cheng, Kerstin Heinen, Eckhard Stroefer, Stefan Maixner, Wolfgang Mackenroth, Christian Tragut, Kai Thiele, Myung Un Won