Patents by Inventor Katja Brosa

Katja Brosa 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).

  • Reactive polyurethane compositions with a low residual monomer content
    Patent number: 9637667
    Abstract: The present invention describes reaction products from 2,4?-diphenylmethane diisocyanate with a content of at least 95 wt. % of 2,4? isomer with at least one polyether-polyol and/or polyalkylene glycol with a molecular weight of less than 1,000 and/or one crystalline or partly crystalline or vitreously amorphous polyester-polyol and optionally polyester-polyols and/or polyether-polyols which are liquid at room temperature and have molecular weights of greater than 1,000 can be converted into adhesive compositions which have a very low content of monomeric diisocyanate of less than 0.5, preferably less than 0.25 wt. %. Such hot melt adhesive compositions have a high melt stability and a low viscosity, in addition to the low content of monomeric diisocyanate.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: May 2, 2017
    Assignee: Henkel AG & Co. KGaA
    Inventors: Michael Krebs, Katja Brosa, Andreas Brenger, Uwe Franken, Christoph Lohr
  • Reactive polyurethane compositions with a low residual monomer content
    Publication number: 20050032973
    Abstract: The present invention describes reaction products from 2,4?-diphenylmethane diisocyanate with a content of at least 95 wt. % of 2,4? isomer with at least one polyether-polyol and/or polyalkylene glycol with a molecular weight of less than 1,000 and/or one crystalline or partly crystalline or vitreously amorphous polyester-polyol and optionally polyester-polyols and/or polyether-polyols which are liquid at room temperature and have molecular weights of greater than 1,000 can be converted into adhesive compositions which have a very low content of monomeric diisocyanate of less than 0.5, preferably less than 0.25 wt. %. Such hot melt adhesive compositions have a high melt stability and a low viscosity, in addition to the low content of monomeric diisocyanate.
    Type: Application
    Filed: April 12, 2004
    Publication date: February 10, 2005
    Inventors: Michael Krebs, Katja Brosa, Andreas Brenger, Uwe Franken, Christoph Lohr
  • Adhesion promoter for reactive polyurethanes
    Publication number: 20050032974
    Abstract: Isocyanato-functional silanes prepared by reacting aliphatic or cycloaliphatic polyisocyanates of low volatility with organofunctional silanes containing NCO-reactive groups are useful as adhesion promoters in polyurethane adhesives and sealants.
    Type: Application
    Filed: June 17, 2004
    Publication date: February 10, 2005
    Inventors: Michael Krebs, Uwe Franken, Katja Brosa, Ingolf Scheffler