Patents by Inventor Ursula Tracht

Ursula Tracht 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 continuous isocyanate modification
    Patent number: 9790194
    Abstract: A process for continuous preparation of oligomeric or polymeric isocyanates by catalytic modification of monomeric di- and/or triisocyanates, characterized in that at least one isocyanate component A and at least one catalyst component B are combined continuously in a reaction apparatus and conducted through the reaction apparatus as a reaction mixture, the residence time distribution being characterized according to the dispersion model by Bo (Bodenstein number) above 40, preferably above 60 and most preferably above 80.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 17, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Frank Richter, Martin Anstock, Philip Bahke, Andreas Gosch, Reinhard Halpaap, Andreas Hecking, Sigurd Buchholz, Ursula Tracht, Adrian Cosmin Dobre
  • METHOD FOR THE CONTINUOUS PRODUCTION OF STABLE PREPOLYMERS
    Publication number: 20170152342
    Abstract: The invention relates to a method for the continuous production of stable prepolymers based on high-melting diisocyanates, in particular, 1,5-naphthalindiisocyanate, and to the use thereof for producing polyurethane elastomers, in particular casting elastomers.
    Type: Application
    Filed: June 3, 2015
    Publication date: June 1, 2017
    Inventors: Josef Sanders, Andreas Hecking, Gerrit Woudenberg, Sigurd Buchholz, Christian Joachim Hahn, Ursula Tracht
  • Activity monitoring and polymerization process control
    Patent number: 9562125
    Abstract: The present invention relates to a method to control a liquid feed stream carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 7, 2017
    Assignee: ARLANXEO Deutschland GmbH
    Inventors: Ursula Tracht, Ricarda Leiberich, Michael Berger, Hanns-Ingolf Paul, Udo Wiesner
  • PROCESS FOR CONTINUOUS ISOCYANATE MODIFICATION
    Publication number: 20140343280
    Abstract: A process for continuous preparation of oligomeric or polymeric isocyanates by catalytic modification of monomeric di- and/or triisocyanates, characterized in that at least one isocyanate component A and at least one catalyst component B are combined continuously in a reaction apparatus and conducted through the reaction apparatus as a reaction mixture, the residence time distribution being characterized according to the dispersion model by Bo (Bodenstein number) above 40, preferably above 60 and most preferably above 80.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 20, 2014
    Inventors: Frank Richter, Martin Anstock, Philip Bahke, Andreas Gosch, Reinhard Halpaap, Andreas Hecking, Sigurd Buchholz, Ursula Tracht, Adrian Cosmin Dobre
  • Method for preparing polyurethane prepolymers containing isocyanate groups
    Patent number: 8835591
    Abstract: The present invention relates to the technical field of isocyanates. The present invention provides a method for preparing NCO prepolymers by reacting a stoichiometric excess of an organic isocyanate with an isocyanate-reactive component, the reaction components being mixed together and the mixture being introduced directly into a storage or transport vessel, where it reacts to completion.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: September 16, 2014
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Hans-Georg Pirkl, Manfred Schmidt, Robert Vieler, Ursula Tracht, Peter Weuta, Sigurd Buchholz
  • ACTIVITY MONITORING AND POLYMERIZATION PROCESS CONTROL
    Publication number: 20140058050
    Abstract: The present invention relates to a method to control a liquid feed stream carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity.
    Type: Application
    Filed: September 23, 2011
    Publication date: February 27, 2014
    Applicant: LANXESS Deutschland GmbH
    Inventors: Ursula Tracht, Ricarda Leiberich, Michael Berger, Hanns-Ingolf Paul, Udo Wiesner
  • PROCESS FOR PREPARING POLYURETHANE PREPOLYMERS CONTAINING ISOCYANATE GROUPS
    Publication number: 20130158291
    Abstract: The present invention relates to the technical field of isocyanates. The present invention provides a method for preparing NCO prepolymers by reacting a stoichiometric excess of an organic isocyanate with an isocyanate-reactive component, the reaction components being mixed together and the mixture being introduced directly into a storage or transport vessel, where it reacts to completion.
    Type: Application
    Filed: July 11, 2011
    Publication date: June 20, 2013
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Hans-Georg Pirkl, Manfred Schmidt, Robert Vieler, Ursula Tracht, Peter Weuta, Sigurd Buchholz
  • Process and apparatus for the preparation of polycarbonate
    Patent number: 8394912
    Abstract: The invention relates to a process for the pretreatment of material surfaces in order to minimize the interaction between polycarbonate and metal and, in the processing and synthesis of polycarbonate, to obtain a high-quality polymer which in particular does not become discolored and is free of insoluble constituents.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: March 12, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Frank Doebert, Andreas Stremmel, Christoph Biedron, Stephan Laue, Johann Rechner, Torsten Hagen, Frank Bruynseels, Frank Quaeyhaegens, Johan Decloedt, Paul Van Dorst, Uwe Arndt, Johan Vanden Eynde, Ursula Tracht, Thomas König, Ulrich Liesenfelder
  • METHOD FOR PRODUCING HYDROXYALKYL(METH)ACRYLATES
    Publication number: 20120271064
    Abstract: The present invention relates to a continuous process for preparing hydroxyalkyl (meth)acrylates, more particularly those hydroxyalkyl (meth)acrylates which have more than one (meth)acrylate group per molecule.
    Type: Application
    Filed: July 6, 2010
    Publication date: October 25, 2012
    Applicants: BAYER MATERIAL SCIENCE AG, BAYER TECHNOLOGY SERVICES GMBH
    Inventors: Björn Henninger, Ursula Tracht, Sigurd Buchholz, Claudia Willems, Rolf Bachmann, Michael Ludewig, Wolfgang Fischer
  • Process for preparing radiation-curable prepolymers containing urethane groups
    Patent number: 8283488
    Abstract: The invention relates to a continuous process for preparing radiation-curable prepolymers containing urethane groups, more particularly urethane acrylates.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: October 9, 2012
    Assignee: Bayer MaterialScience AG
    Inventors: Björn Henninger, Ursula Tracht, Sigurd Buchholz, Claudia Willems, Rolf Bachmann, Michael Ludewig, Wolfgang Fischer
  • PROCESS AND APPARATUS FOR THE PREPARATION OF POLYCARBONATE
    Publication number: 20110184144
    Abstract: The invention relates to a process for the pretreatment of material surfaces in order to minimize the interaction between polycarbonate and metal and, in the processing and synthesis of polycarbonate, to obtain a high-quality polymer which in particular does not become discoloured and is free of insoluble constituents.
    Type: Application
    Filed: December 20, 2010
    Publication date: July 28, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Frank Doebert, Andreas Stremmel, Christoph Biedron, Stephan Laue, Johann Rechner, Torsten Hagen, Frank Bruynseels, Frank Quaeyhaegens, Johan Decloedt, Paul Van Dorst, Uwe Arndt, Johan Vanden Eynde, Ursula Tracht, Thomas König, Ulrich Liesenfelder
  • PROCESS FOR PREPARING RADIATION-CURABLE PREPOLYMERS CONTAINING URETHANE GROUPS
    Publication number: 20100022797
    Abstract: The invention relates to a continuous process for preparing radiation-curable prepolymers containing urethane groups, more particularly urethane acrylates.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 28, 2010
    Applicant: BAYER TECHNOLOGY SERVICES GMBH
    Inventors: Björn HENNINGER, Ursula Tracht, Sigurd Buchholz, Claudia Willems, Rolf Bachmann, Michael Ludewig, Wolfgang Fischer