Patents by Inventor Werner Obrecht

Werner Obrecht 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 metathetic degradation of nitrile rubber
    Patent number: 7875683
    Abstract: The metathetic degradation of nitrile rubber can be improved by use of a combination of metal-carbene complex catalysts with specific transition metal additives.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: January 25, 2011
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Julia Maria Müller, Oskar Nuyken
  • Microgels in non-crosslinkable organic media
    Patent number: 7842732
    Abstract: The invention relates to a composition which comprises a specific non-crosslinkable medium and at least one microgel, processes for its preparation, uses of the compositions, and microgel-containing polymers, rubbers, lubricants, coatings etc. prepared therefrom.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: November 30, 2010
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Torsten Ziser, Thomas Früh, Patrick Galda, Werner Obrecht
  • Sulfur-crosslinked hydrogenated vinyl polybutadienes, and use thereof for the production of technical rubber articles having good recovery behavior across a large temperature range
    Patent number: 7803882
    Abstract: The present invention relates to sulphur-crosslinked hydrogenated vinylpolybutadienes which serve for production of technical rubber items and of tyre components and have very good recovery performance over a wide temperature range.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: September 28, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Andreas Bischoff, Werner Obrecht
  • METHODS FOR PRODUCING RUBBER MIXTURES
    Publication number: 20100197829
    Abstract: The invention relates to processes for the production of microgel-containing rubber mixtures, to rubber mixtures obtainable by the processes, to processes for the production of vulcanizates, and also to vulcanizates after the vulcanization process, in particular in the form of tires, parts of tires, or industrial rubber items.
    Type: Application
    Filed: April 17, 2008
    Publication date: August 5, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventor: Werner Obrecht
  • RUBBER MIXTURES WITH FUNCTIONALIZED DIENE RUBBERS AND WITH MICROGELS, A PRODUCTION PROCESS, AND USE OF THE MIXTURESü
    Publication number: 20100152370
    Abstract: The present invention relates to rubber mixtures with functionalized diene rubbers and with microgels, to a production process, and to the use of the mixtures for the production of low-abrasion motor-vehicle tyres which have wet-slip resistance and which have low rolling resistance.
    Type: Application
    Filed: October 15, 2009
    Publication date: June 17, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Norbert Steinhauser, Werner Obrecht, David Hardy, Thomas Gross
  • Catalyst systems and their use for metathesis reactions
    Patent number: 7737233
    Abstract: Novel catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, which contain a specific salt additive in addition to the metathesis catalyst are provided.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: June 15, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Kirstin Langfeld, Martin Schneider, Oskar Nuyken
  • STORAGE-STABLE, HYDROXY-MODIFIED MICROGEL LATICES
    Publication number: 20100120973
    Abstract: A composition is described, encompassing a constituent selected from the group consisting of a modified resin acid (I), a fatty acid (II) and a mixture composed of a modified resin acid (I) and of a fatty acid (II), where the degree of neutralisation of the constituent is from 104 to 165%. Its use for the production of microgels is also described.
    Type: Application
    Filed: November 9, 2009
    Publication date: May 13, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventor: Werner Obrecht
  • LAYERED-STRUCTURE VULCANIZATES BASED ON HYDROGENATED VINYL POLYBUTADIENE
    Publication number: 20100112365
    Abstract: The present invention relates to layered-structure vulcanizates, where at least one of the layers is composed of a hydrogenated vinylpolybutadiene and the other layers are preferably composed of rubbers double bonds.
    Type: Application
    Filed: June 25, 2007
    Publication date: May 6, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Werner Obrecht, Andreas Bischoff, Alexander Lissy
  • CATALYST SYSTEMS AND THEIR USE FOR METATHESIS REACTIONS
    Publication number: 20100093944
    Abstract: Novel catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, which contain a specific addition of boric acid compounds.
    Type: Application
    Filed: July 2, 2009
    Publication date: April 15, 2010
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Julia Marie Müller, Oskar Nuyken, Werner Obrecht
  • Catalyst Systems and their use for Metathesis Reactions
    Publication number: 20100087600
    Abstract: A novel process for reducing the molecular weight of nitrile rubber in the presence of specific catalyst systems containing the metathesis catalyst and also a specific addition of fluorine-containing boron compounds is provided.
    Type: Application
    Filed: June 23, 2009
    Publication date: April 8, 2010
    Applicant: LANXESS Deutschland GmbH
    Inventors: Julia Maria Müller, Oskar Nuyken, Werner Obrecht
  • POLYMER ELECTROLYTE MEMBRANE WITH FUNCTIONALIZED NANOPARTICLES
    Publication number: 20100068593
    Abstract: The present invention relates to a polymer electrolyte membrane for fuel cells, comprising a polymer matrix of at least one basic polymer and one or more doping agents, wherein particles containing ionogenic groups and having a mean particle diameter in the nanometer range are embedded in the polymer matrix and the particles containing ionogenic groups are distributed homogeneously in the polymer matrix in a concentration of less than 50% relative to the weight of the polymer matrix, as well as to the production and use of same, especially in high-temperature fuel cells.
    Type: Application
    Filed: September 8, 2009
    Publication date: March 18, 2010
    Applicants: ELCOMAX MEMBRANES GMBH, LANXESS DEUTSCHLAND GMBH, RHEIN CHEMIE RHEINAU GMBH
    Inventors: Annette Reiche, Dieter Melzner, Ulrich Mähr, Oliver Gronwald, Werner Obrecht, Thomas Früh, Torsten Ziser
  • Process for the metathetic degradation of nitrile rubbers
    Patent number: 7662889
    Abstract: An improved process for the metathetic degradation of nitrile rubber using catalyst systems comprising the catalyst and also a phosphane or diphosphane is provided.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: February 16, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Julia Maria Müller, Oskar Nuyken, Monika Kellner
  • Sulfur-Crosslinked Hydrogenated Vinyl Polybutadienes, and Use Thereof for the Production of Technical Rubber Articles Having Good Recovery Behavior Across a Large Temperature Range
    Publication number: 20090253892
    Abstract: The present invention relates to sulphur-crosslinked hydrogenated vinylpolybutadienes which serve for production of technical rubber items and of tyre components and have very good recovery performance over a wide temperature range.
    Type: Application
    Filed: October 31, 2006
    Publication date: October 8, 2009
    Inventors: Andreas Bischoff, Werner Obrecht
  • CATALYSTS FOR METATHESIS REACTIONS
    Publication number: 20090076226
    Abstract: Novel catalysts for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.
    Type: Application
    Filed: August 18, 2008
    Publication date: March 19, 2009
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Ludek Meca, Lubica Triscikova, Heinz Berke, Kirsten Langfeld, Martin Schneider, Oskar Nuyken, Werner Obrecht
  • PROCESS FOR THE METATHETIC DEGRADATION OF NITRILE RUBBER
    Publication number: 20090076227
    Abstract: The metathetic degradation of nitrile rubber can be improved by use of a combination of metal-carbene complex catalysts with specific transition metal additives.
    Type: Application
    Filed: August 19, 2008
    Publication date: March 19, 2009
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Werner Obrecht, Julia Maria Muller, Oskar Nuyken
  • CATALYST SYSTEMS AND THEIR USE FOR METATHESIS REACTIONS
    Publication number: 20090069516
    Abstract: Novel catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, which contain a specific salt additive in addition to the metathesis catalyst are provided.
    Type: Application
    Filed: August 18, 2008
    Publication date: March 12, 2009
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Werner Obrecht, Kerstin Langfeld, Martin Schneider, Oskar Nuyken
  • Metathesis of Nitrile Rubbers In the Presence of Transition Metal Complex Catalysts
    Publication number: 20090054597
    Abstract: A novel process for the metathetic degradation of nitrile rubbers is provided which uses specific transition metal complex catalysts showing an increased activity.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 26, 2009
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Christopher Ong, Werner Obrecht, Oskar Nuyken, Julia Maria Muller
  • Method for the degradation of nitrile rubber by metathesis in the presence of ruthenium- or osmium-based catalysts
    Patent number: 7470750
    Abstract: A novel process for the degradation of nitrile rubber by metathesis using ruthenium- or osmium-based catalysts which have both a substituted or unsubstituted imidazolidine ligand and a carbene ligand bearing a phosphonium radical is provided.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: December 30, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Julia Maria Müller, Oskar Nuyken, Heinz Berke, Ludek Meca, Lubica Triscikova
  • NITRILE RUBBERS
    Publication number: 20080293889
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a specific calcium and chloride content and have a particularly high storage stability.
    Type: Application
    Filed: February 14, 2008
    Publication date: November 27, 2008
    Applicant: LANXESS Deutschland GmbH
    Inventor: Werner Obrecht
  • NITRILE RUBBERS
    Publication number: 20080293869
    Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.
    Type: Application
    Filed: February 28, 2008
    Publication date: November 27, 2008
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventor: Werner Obrecht