Patents by Inventor Christiane Oppenheimer-Stix

Christiane Oppenheimer-Stix 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).

  • Method for isolating di-trimethylol propane
    Patent number: 8642816
    Abstract: The present invention relates to a method for isolating ditrimethylol propane from secondary trimethylol propane production streams.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: February 4, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventors: Gunter Rauchschwalbe, Ulrich Notheis, Michael Friederich, Hans-Dieter Gerriets, Carsten Hummelt, Christiane Oppenheimer-Stix, Paul Wagner
  • Aqueous adhesive dispersions
    Patent number: 8519047
    Abstract: Aqueous polymer dispersions based on polychloroprene, a process for their preparation and their use in adhesive formulations. The aqueous polymer dispersion is obtained by a) preparing an aqueous polychloroprene dispersion with a gel content of 0.1 wt. %-30 wt. %, based on the polymer, prepared by polymerization at 0° C.-70° C. of chloroprene and, optionally, ethylenically unsaturated monomers which can be copolymerized with chloroprene and b) subsequently storing the dispersion at temperatures of from 50° C.-110° C. until the gel content has risen by at least 10 wt. % to 1-60 wt. %, based on the polymer.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: August 27, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Rüdiger Musch, Christiane Oppenheimer-Stix, Knut Panskus, Renke Mottweiler, Norbert Schildan
  • METHOD FOR ISOLATING DI-TRIMETHYLOL PROPANE
    Publication number: 20120010435
    Abstract: The present invention relates to a method for isolating ditrimethylol propane from secondary trimethylol propane production streams.
    Type: Application
    Filed: August 11, 2009
    Publication date: January 12, 2012
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Gunter Rauchschwalbe, Ulrich Notheis, Michael Friederich, Hans-Dieer Gerriets, Carsten Hummelt, Christiane Oppenheimer-Stix, Paul Wagner
  • Nitrile rubber mixtures with a low tendency towards mold contamination
    Patent number: 6929769
    Abstract: The present invention relates to a process for reducing mold contamination in an injection molding process by using a mixture of nitrile rubbers, in the range of from 0.1-0.5 wt. % of fatty acids and optionally further additives.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: August 16, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Parg, Hans Magg, Luigi Marinelli, Jürgen Wassen, Peter Wendling, Hans-Rafael Winkelbach, Christiane Oppenheimer-Stix, Hans Christian Strauch, Jean-Pierre Lambert
  • Aqueous adhesive dispersions
    Publication number: 20050143498
    Abstract: Aqueous polymer dispersions based on polychloroprene, a process for their preparation and their use in adhesive formulations. The aqueous polymer dispersion is obtained by a) preparing an aqueous polychloroprene dispersion with a gel content of 0.1 wt. %-30 wt. %, based on the polymer, prepared by polymerization at 0° C.-70° C. of chloroprene and, optionally, ethylenically unsaturated monomers which can be copolymerized with chloroprene and b) subsequently storing the dispersion at temperatures of from 50° C.-110° C. until the gel content has risen by at least 10 wt. % to 1-60 wt. %, based on the polymer.
    Type: Application
    Filed: April 16, 2004
    Publication date: June 30, 2005
    Inventors: Rudiger Musch, Christiane Oppenheimer-Stix, Knut Panskus, Renke Mottweiler, Norbert Schildan
  • Process for concentrating polymer latexes
    Patent number: 6855766
    Abstract: The invention concerns a process for concentrating polymer latexes, which can be separated into a latex phase and a serum phase in a separator with the aid of an auxiliary coalescing device.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: February 15, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christiane Oppenheimer-Stix, Michael Traving
  • Nitrile rubber mixtures with a low tendency towards mold contamination
    Publication number: 20030181604
    Abstract: The present invention relates to a process for reducing mold contamination in an injection molding process by using a mixture of nitrile rubbers, in the range of from 0.1-0.5 wt. % of fatty acids and optionally further additives.
    Type: Application
    Filed: January 16, 2003
    Publication date: September 25, 2003
    Inventors: Roland Parg, Hans Magg, Luigi Marinelli, Jurgen Wassen, Peter Wendling, Hans-Rafael Winkelbach, Christiane Oppenheimer-Stix, Hans Christian Strauch, Jean-Pierre Lambert
  • Process for concentrating polymer latexes
    Publication number: 20030050383
    Abstract: The invention concerns a process for concentrating polymer latexes, which can be separated into a latex phase and a serum phase in a separator with the aid of an auxiliary coalescing device.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 13, 2003
    Inventors: Christiane Oppenheimer-Stix, Michael Traving
  • Polymerization-initiating supported systems
    Patent number: 6387837
    Abstract: This invention relates to a process for the free-radical polymerization of monomers in gas phase or suspension processes using a supported, polymerization-initiating system comprising a) one or more polymerization-initiating components which initiate and start free-radical polymerization, b) a support, onto which said polymerization-initiating component is applied, and c) optionally, one or more modifiers which have an influence upon reaction kinetics and/or product properties.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: May 14, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Dauben, Martin Hoch, Christiane Oppenheimer-Stix, Peter Schertl
  • New Stabilizers and their use for the production of stabilized polyamides and rubber materials
    Patent number: 4897436
    Abstract: Products prepared by reacting isopropenyl phenols or bisphenols of the bisphenol-A type with diphenyl amine, phenothiazin or derivatives thereof in the presence of acidic catalysts are used as stabilizers for polyamides and rubbery materials.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: January 30, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Zsolt Szentivanyi, Bert Brassat, Christiane Oppenheimer-Stix