Patents by Inventor Ingo Bockhoff

Ingo Bockhoff 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).

  • Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups
    Patent number: 7001973
    Abstract: A low-viscosity polyisocyanate of reduced color, containing isocyanurate groups is prepared by partially trimerizing an aliphatic and/or cycloaliphatic diisocyanate in the presence of 0.02 to 2% weight, based on the weight of the diisocyanate starting material, of at least one trimerization catalyst containing a quarternary amine component and then removing excess diisocyanate from the reaction medium.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: February 21, 2006
    Assignee: Degussa AG
    Inventors: Stephan Kohlstruk, Ingo Bockhoff, Michael Ewald, Rainer Lomoelder
  • Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups
    Publication number: 20030187178
    Abstract: A low-viscosity polyisocyanates and polyisocyanates of reduced color containing isocyanurate groups is prepared by a process comprising, partially trimerizing aliphatic and/or cycloaliphatic diisocyanates in the presence of 0.
    Type: Application
    Filed: March 26, 2003
    Publication date: October 2, 2003
    Applicant: DEGUSSA AG
    Inventors: Stephan Kohlstruk, Ingo Bockhoff, Michael Ewald, Rainer Lomoelder
  • Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups
    Patent number: 6613863
    Abstract: A low-viscosity polyisocyanate of reduced color, containing isocyanurate groups is prepared by partially trimerizing an aliphatic and/or cycloaliphatic diisocyanate in the presence of 0.02 to 2% by weight, based on the weight of the diisocyanate starting material, of at least one trimerization catalyst containing a quarternary amine component and then removing excess diisocyanate from the reaction medium.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: September 2, 2003
    Assignee: Degussa AG
    Inventors: Stephan Kohlstruk, Ingo Bockhoff, Michael Ewald, Rainer Lomoelder
  • Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups
    Publication number: 20020120089
    Abstract: A low-viscosity polyisocyanates and polyisocyanates of reduced color containing isocyanurate groups is prepared by a process comprising, partially trimerizing aliphatic and/or cycloaliphatic diisocyanates in the presence of 0.
    Type: Application
    Filed: December 21, 2001
    Publication date: August 29, 2002
    Applicant: DEGUSSA AG
    Inventors: Stephan Kohlstruk, Ingo Bockhoff, Michael Ewald, Rainer Lomoelder