Patents by Inventor Arndt Brückner

Arndt Brückner 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 branched polyorganosiloxanes
    Patent number: 7829647
    Abstract: The invention relates to a process for the preparation of branched siloxanes containing R—SiO3/2 units, where R=organic radical, wherein straight-chain polysiloxanes containing silane hydrogen in the polymer chain are reacted in the presence of ammonium or metal carboxylates as a catalyst in the absence of hydroxy-functional organic compounds, and to siloxanes thus prepared and the use thereof in the preparation of polyurethane foams and antifoam formulations.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: November 9, 2010
    Assignee: Evonik Goldschmidt GmbH
    Inventors: Arndt Brückner, Carsten Schiller, Christian Mund
  • CYCLIC SILOXANES AND THEIR USE
    Publication number: 20100029587
    Abstract: The invention relates to cyclic siloxanes in which organically modifying groups are bonded to the silicon atom via an oxygen atom (SiOC linkage), and to their use in the production of polyesterpolyurethane and as additive for enhancing the activity of biocides and pesticides.
    Type: Application
    Filed: November 5, 2007
    Publication date: February 4, 2010
    Inventors: Arndt Brückner, Martin Glos, Frauke Henning, Ewald Sieverding
  • Process for preparing organically modified polyorganosiloxanes
    Patent number: 7605284
    Abstract: The invention relates to a process for the dehydrogenative condensation of alcohols and siloxanes which have at least one hydrogen atom bound to a silicon atom in the molecule, wherein at least one quaternary ammonium hydroxide is used as effective catalyst in this reaction.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: October 20, 2009
    Assignee: Goldschmidt GmbH
    Inventors: Arndt Brueckner, Ingrid Eissmann, Michael Ferenz, Sascha Herrwerth, Thomas Neumann
  • PROCESS FOR PREPARING ORGANICALLY MODIFIED POLYORGANOSILOXANES
    Publication number: 20070100153
    Abstract: The invention relates to a process for the dehydrogenative condensation of alcohols and siloxanes which have at least one hydrogen atom bound to a silicon atom in the molecule, wherein at least one quaternary ammonium hydroxide is used as effective catalyst in this reaction.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 3, 2007
    Applicant: Goldschmidt GmbH
    Inventors: Arndt Brueckner, Ingrid Eissmann, Michael Ferenz, Sascha Herrwerth, Thomas Neumann