Patents by Inventor Hanno Brümmer

Hanno Brümmer 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).

  • GAS-PHASE PHOSGENATION PROCESS
    Publication number: 20100312009
    Abstract: The present invention relates to a process for the phosgenation of amines in the gas phase, in which a specific type of heat exchanger is used for vaporizing the amines.
    Type: Application
    Filed: August 12, 2010
    Publication date: December 9, 2010
    Applicant: Bayer MaterialScience AG
    Inventors: Josef Sanders, Hanno Brümmer, Jörg Laue, Bernd Sojka, Marcus Eichmann, Verena Haverkamp
  • NCO prepolymers prepared from isophorone diisocyanate and having a low monomer content
    Patent number: 6825376
    Abstract: The present invention relates to solvent-free, NCO prepolymers having a residual IPDI monomer content of less than 2.0 wt. %, an NCO content of 2.0 to 5.0 wt. % and a viscosity of 5000 to 20,000 mPa·s, wherein the NCO prepolymers are the reaction products of i) 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate and ii) one or more polyethers prepared by the DMC catalyst process and having an OH-functionality of 1.80 to 2.00 at an NCO/OH equivalent ratio of 1.5:1 to 2.2:1. The present invention also relates to a process for preparing these solvent-free, NCO prepolymers and to polyurethane coating, sealant, adhesive and/or embedding compositions containing the solvent-free, NCO prepolymers as a binder and/or binder component.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: November 30, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Steffen Hofacker, Rolf Gertzmann, Olaf Fleck, Gerhard Ruttmann, Hanno Brümmer
  • Solid, radiation-curing powder coating binders and a process for preparing the same
    Patent number: 6809126
    Abstract: The present invention relates to powder coating binders containing polyurethanes having (meth)acryloyl groups which are applied onto a substrate, fused with heat and cured by electromagnetic radiation and to a process for preparing the same.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: October 26, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Fäcke, Jan Weikard, Hanno Brümmer, Peter Thometzek