Patents Represented by Attorney Jennifer R. Seng

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  • Halogen- and sulfur-free shaped articles containing peroxide curable compounds of butyl rubber
    Patent number: 6974851
    Abstract: The present invention relates to a shaped article for high purity applications containing at least one peroxide curable compound containing a substantially gel-free butyl polymer. In another of its aspects, the present invention relates to a sealing material and a medical device containing at least one peroxide-curable compound containing a substantially gel-free butyl polymer. In still another of its aspects, the present invention relates to a fuel cell containing at least one peroxide curable compound containing a substantially gel-free butyl polymer. In still another of its aspects, the present invention relates to halogen-free and sulfur-free shaped articles.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: December 13, 2005
    Assignee: Bayer Inc.
    Inventors: Adam Gronowski, Susmita Bhattacharjee, Gabor Kaszas
  • Halogenated terpolymers of isobutylene, diolefin monomer and styrenic monomer
    Patent number: 6960632
    Abstract: A halogenated butyl polymer having improved properties, the butyl polymer derived from a monomer mixture comprising a C4 to C8 monoolefin monomer, a C4 to C14 multiolefin monomer and a styrenic monomer with a catalyst system to produce the butyl polymer. The improved properties include faster cure, higher maximum torque, higher delta torque, relatively stable modulus over time, improved hot air aging properties and improved aged flexure properties. These improved properties are believed to result from direct interaction between the styrenic moieties in the polymer backbone with a crosslinking agent added to vulcanize the halogenated butyl rubber.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: November 1, 2005
    Assignee: Bayer Inc.
    Inventor: Gabor Kaszas
  • Process for the production of aminodiphenylamines
    Patent number: 6946577
    Abstract: The present invention relates to a process for the production of aminodiphenyl-amines, such as 4-aminodiphenylamine (4-ADPA), by reacting nitrohalogenated benzenes with anilines in the presence of a base as well as a copper-phosphorus complex, followed by hydrogenation of the intermediately formed nitrodiphenyl-amines.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: September 20, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Adolf Sicheneder, Ulrich Scholz, Joachim Haider
  • 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
  • Gel-containing rubber compounds with multifunctional isocyanates and polyols
    Patent number: 6908965
    Abstract: The rubber compounds according to the present invention are based on uncrosslinked rubbers, crosslinked rubber particles together with multifunctional isocyanates and polyols. These rubber compounds can be used for the manufacture of rubber vulcanizates or any type of molded rubber article, whereby the vulcanizates display good mechanical properties combined with a large difference in impact resilience values at 70° C. and 23° C.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: June 21, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Obrecht, Ludger Heiliger
  • Low molecular weight nitrile rubber
    Patent number: 6841623
    Abstract: The present invention relates to nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art. The present invention also relates to a process for the manufacture of said nitrile rubber and the use of said nitrile rubber for the manufacture of shaped articles.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: January 11, 2005
    Assignee: Bayer Inc.
    Inventors: Frédéric Guérin, Sharon X. Guo
  • Diene rubber compounds for improved rubber moldings
    Patent number: 6825282
    Abstract: This invention relates to vulcanizable diene rubber compounds with a high capacity for the addition of sulfur to be varied while processing safety is maintained, for the production of improved rubber moldings, particularly tire components.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: November 30, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Winfried Jeske, Hartmuth Buding, Hermann-Josef Weidenhaupt
  • Water-blown foams of low apparent density
    Patent number: 6822011
    Abstract: The invention relates to foam having an apparent density of less than 100 kg/m3, in which water is predominantly used as the blowing agent, and to products that contain such foams. The mentioned foams have a large proportion of open cells (>80%).
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: November 23, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf Albach, Eduard Mayer, Juan Cirujeda-Ranzenberger
  • Process for the preparation of nitrodiphenylamines
    Patent number: 6815562
    Abstract: The present invention relates to a process for the preparation of nitrodiphenylamines by reaction of nitrohalogens with anilines, a base and a catalyst, and to a process for the preparation of aminodiphenylamine by hydrogenation of the nitrodiphenylamine intermediately prepared.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: November 9, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Kunz, Joachim Haider, Dirk Ganzer, Ulrich Scholz, Adolf Sicheneder
  • Rubber mixtures containing 1,4-butenediol (polyether)
    Patent number: 6815484
    Abstract: The present invention relates to rubber mixtures with improved processing behavior and high filler activity, containing 1,4-butenediol and/or 1,4-butenediol polyether, as well as the use of the rubber mixtures for the production of vulcanizates, in particular for the production of highly reinforced, abrasion-resistant molded articles, and preferably for the production of tires that have a low rolling resistance and a high abrasion resistance.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: November 9, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Scholl, Hermann-Josef Weidenhaupt
  • Rubber mixtures containing silica, carbon black and rubber gel
    Patent number: 6809146
    Abstract: The present invention relates to rubber mixtures based on silica and carbon black-filled solution styrene/butadiene rubbers in which the silica has been partially replaced by rubber gels. The vulcanizates produced from the rubber mixtures of the present invention are distinguished by improved cushioning behavior at 0° C. and 60° C., and this is accompanied by better resistance to slipping when wet and improved rolling resistance. In addition, the vulcanizates have good resistance to wear. The processing behavior of the unvulcanized rubber mixtures (compound viscosity and Mooney relaxation) is not impaired by the partial substitution of silica.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: October 26, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Obrecht, Anthony James Morgan Sumner
  • Microgel-containing rubber compounds with phosphoryl polysulfides and vulcanizates or shaped articles prepared therefrom
    Patent number: 6797780
    Abstract: The invention relates to rubber compounds based on rubber particles and phosphoryl polysulfides, as well as to vulcanizates or shaped articles prepared therefrom. The addition of phosphoryl polysulfides improves the strengthening effect of the rubber particles and the level of the mechanical properties, without lowering the resilience of the vulcanizates prepared therefrom.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: September 28, 2004
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Werner Obrecht, Winfried Jeske, Thomas Früh, Ludger Heiliger
  • Covulcanization of polymers
    Patent number: 6794452
    Abstract: Polymeric materials that differ from each other in solubility parameters and other properties are covulcanized by reaction with a hydrogenated carboxylated nitrile rubber, a multivalent salt of an organic acid and a curing agent.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: September 21, 2004
    Assignee: Bayer Inc.
    Inventor: Carl Walter von Hellens
  • Sports signalling device for hearing impaired persons
    Patent number: 6794989
    Abstract: The present invention relates to an apparatus and method for providing instructions to a hearing impaired individual performing a sports activity thereby instructing the hearing impaired individual to perform a particular action in a sports activity.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: September 21, 2004
    Inventors: Kara Jean Naegely, Lara Terminiello, Shannon Fitzgerald
  • Low molecular weight hydrogenated nitrile rubber
    Patent number: 6780939
    Abstract: The present invention relates to hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art. The present invention is also related to shaped articles containing hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: August 24, 2004
    Assignee: Bayer Inc.
    Inventors: Frédéric Guérin, Sharon X. Guo, Zsolt Szentivanyi, Stephan Glander
  • Process to manufacture three dimensionally shaped substrate for sound abatement
    Patent number: 6773756
    Abstract: The present invention is directed to a process for the manufacture of three-dimensional acoustically sound automotive insulation parts. In particular, the process includes mixing a two component polyurethane resin, applying the resin to a substrate, molding the substrate and then trimming and demolding the resin applied substrate.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: August 10, 2004
    Assignees: Bayer Polymers LLC, Bayer Aktiengesellschaft
    Inventors: Sven Meyer-Ahrens, Thomas J. Matwiczyk, Bin Lee, Michael A. Blaszkiewicz, Walter Guarnieri
  • Mixtures of olefin polymers and nitrile rubbers
    Patent number: 6765064
    Abstract: This invention relates to a mixture containing one or more olefin rubbers and one or more nitrile rubbers, to a process for the production thereof, to a vulcanizable mixture and to a process for the production thereof as well as to moldings of all kinds producible from the mixtures.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: July 20, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hans Magg
  • Process for the production of dithiophosphoric acid polysulfide mixtures
    Patent number: 6761832
    Abstract: This invention relates to a process for the production of dithiophosphoric acid poly-sulfide mixtures, which is characterized in that dithiophosphoric acid disulfides are reacted with sulfur at elevated temperatures. The dithiophosphoric acid polysulfide mixtures produced using the process according to the present invention are used as sulfur donors for the vulcanization of natural and synthetic rubbers and in the latex vulcanization of natural and synthetic rubber latex.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: July 13, 2004
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Ludger Heiliger, Alfred Pauli, Joachim Hegmann, Clemens Schudok, Thomas Früh
  • Modified polymers with a high proportion of cis-position double bonds
    Patent number: 6759497
    Abstract: The present invention relates to polymers that are modified along the polymer chain and are based on conjugated dienes or conjugated dienes and vinyl-aromatic compounds having a content of vinyl-aromatic compounds of up to 60 wt. %, a content of cis-position double bonds of ≧92%, a mean molecular weight of 50,000 to 1,500,000 g/mole and a gel content of ≦5%. The polymers according to the invention can be used for the production of all types of molded articles, wherein in particular their technical and physical properties are improved compared with the prior art.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: July 6, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Grün, Thomas Knauf, Wilfried Braubach
  • Vulcanizable rubber mixes
    Patent number: 6750275
    Abstract: The present invention relates to vulcanizable rubber mixes which, apart from the rubbers, contain O,O-bis-(alkyl)-dithiophosphoric acid polysulfides and primary and/or secondary amines, which are characterized in that they may be vulcanized without release of nitrosamines with a high crosslink density and a high proportion of short sulfur bridges.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: June 15, 2004
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Thomas Früh, Ludger Heiliger, Thomas Kleiner, Hermann-Josef Weidenhaupt, Robert-Hans Schuster, Joachim Kiesekamp