Patents by Inventor Hartmuth Buding

Hartmuth Buding 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).

  • Preparation of derivatized dithiols
    Patent number: 7553910
    Abstract: The invention relates to a process for preparing dithiols derivatized with dithiocarbamic acids, in which the derivatized dithiols are obtained in high yield and purity.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: June 30, 2009
    Assignee: LANXESS Deutschland GmbH
    Inventors: Hartmuth Buding, Hermann-Josef Weidenhaupt, Winfried Jeske, Thomas Kleiner
  • Use of metal alkanedithiols as crosslinking agents for unsaturated rubbers
    Patent number: 7375164
    Abstract: The present invention relates to vulcanizing agent containing metal alkanedithiols for unsaturated rubbers.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: May 20, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Nicole Häp, Petra Pallogh, Nesibe Ucal, Uwe Zettl
  • Vulcanizing agents based on organic sulphur-nitrogen compounds for unsaturated rubbers and mixtures of these
    Patent number: 7319124
    Abstract: The invention relates to novel organic sulphur-nitrogen compounds, their preparation, and use as vulcanizing agents for unsaturated rubbers and mixtures of these.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: January 15, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Andreas Mihalyi, Uwe Zettl
  • Preparation of thiosulphuric acid derivatives
    Patent number: 7217834
    Abstract: The invention relates to a novel process for preparing salts of S-alkyl esters of thiosulphuric acid by reacting organic dihalides with thiosulphates in water.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: May 15, 2007
    Assignee: Lanxess Deutschland GmbH
    Inventor: Hartmuth Buding
  • Novel vulcanizing agents based on organic sulphur-nitrogen compounds for unsaturated rubbers and mixtures of these
    Publication number: 20060030676
    Abstract: The invention relates to novel organic sulphur-nitrogen compounds, their preparation, and use as vulcanizing agents for unsaturated rubbers and mixtures of these.
    Type: Application
    Filed: March 30, 2005
    Publication date: February 9, 2006
    Inventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Andreas Mihalyi, Uwe Zettil
  • Use of metal alkanedithiols as crosslinking agents for unsaturated rubbers
    Publication number: 20060025538
    Abstract: The present invention relates to vulcanizing agent containing metal alkanedithiols for unsaturated rubbers.
    Type: Application
    Filed: May 2, 2005
    Publication date: February 2, 2006
    Inventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Nicole Hap, Petra Decker, Nesibe Ucal, Uwe Zettl
  • Preparation of derivatized dithiols
    Publication number: 20050272933
    Abstract: The invention relates to a process for preparing dithiols derivatized with dithiocarbamic acids, in which the derivatized dithiols are obtained in high yield and purity.
    Type: Application
    Filed: May 24, 2005
    Publication date: December 8, 2005
    Inventors: Hartmuth Buding, Hermann-Josef Weidenhaupt, Winfried Jeske, Thomas Kleiner
  • Preparation of thiosulphuric acid derivatives
    Publication number: 20050240044
    Abstract: The invention relates to a novel process for preparing salts of S-alkyl esters of thiosulphuric acid by reacting organic dihalides with thiosulphates in water.
    Type: Application
    Filed: April 14, 2005
    Publication date: October 27, 2005
    Inventor: Hartmuth Buding
  • 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
  • Process for the preparation of polymeric sulfur compounds
    Patent number: 6747122
    Abstract: The invention relates to a simple process for the preparation of polymeric sulfur compounds with polythiocyclopentanediyl structural elements which are used as vulcanizing agents for diene rubbers.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: June 8, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Josef Hahn, Marco Runk, Hermann-Josef Weidenhaupt, Hartmuth Buding
  • Process for the preparation of polymeric sulfur compounds
    Publication number: 20030100703
    Abstract: The invention relates to a simple process for the preparation of polymeric sulfur compounds with polythiocyclopentanediyl structural elements which are used as vulcanizing agents for diene rubbers.
    Type: Application
    Filed: July 15, 2002
    Publication date: May 29, 2003
    Inventors: Josef Hahn, Marco Runk, Hermann-Josef Weidenhaupt, Hartmuth Buding
  • Diene rubber compounds for improved rubber moldings
    Publication number: 20020058760
    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: Application
    Filed: May 19, 2000
    Publication date: May 16, 2002
    Inventors: Winfried Jeske, Hartmuth Buding, Hermann-Josef Weidenhaupt
  • Vulcanizable rubber compounds containing styrene-butadiene and butadiene rubbers
    Patent number: 6359045
    Abstract: This invention relates to vulcanizable rubber compounds based on styrene-butadiene rubber, which contain a special vulcanizing system, which are reinforced with silica and which contain a filler activator, for tire treads which exhibit improved abrasion-resistance.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: March 19, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Winfried Jeske, Hartmuth Buding, Hermann-Josef Weidenhaupt
  • Vulcanizing agents for unsaturated rubber mixtures
    Patent number: 6319993
    Abstract: The invention relates to polymeric sulfur compounds, their preparation and their use as vulcanizing agcnts for unsaturated rubber mixtures.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: November 20, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Marco Runk
  • Vulcanizing agents for unsaturated rubber mixtures
    Publication number: 20010029290
    Abstract: The invention relates to new polymeric sulfur compounds, their preparation and their use as vulcanizing agents for unsaturated rubber mixtures.
    Type: Application
    Filed: January 19, 2001
    Publication date: October 11, 2001
    Inventors: Hermann-Josef Weidenhaupt, Hartmuth Buding, Josef Hahn, Marco Runk
  • Moulded, non-caking masticating agents
    Patent number: 5599861
    Abstract: This invention relates to moulded, non-dusting, non-caking, free-flowing masticating agents based on 2,2'-dibenzamidodiphenyl disulphide and mixtures of saturated fatty acids having an iodine number <25, a solidification point in the range from 50.degree. to 68.degree. C. and an acid number of 179 to 215. The masticating agents according to the invention are employed for reducing the viscosity of rubbers containing double bonds, and are normally used in amounts of 0.01 to 3 parts by weight, based on 100 parts by weight of rubber.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: February 4, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hartmuth Buding
  • Shaped masticating agents containing paraffin
    Patent number: 5542974
    Abstract: This invention relates to shaped, non-dusting, non-sticking, free-flowing masticating agents based on 2,2'-dibenzoamidodiphenyl disulphide and paraffins having a solidification point in the range from 50.degree. to 85.degree. C., a needle penetration of 8 to 25 in 1/10 mm, a viscosity of 2 to 10 mm.sup.2 /s. The masticating agents according to the invention are used to reduce the viscosity of rubbers containing double bonds and are customarily used in quantities of 0.01 to 3 parts by weight.
    Type: Grant
    Filed: July 31, 1995
    Date of Patent: August 6, 1996
    Assignee: Bayer AG
    Inventor: Hartmuth Buding
  • Recovery of hydrogenation catalysts from solutions of hydrogenated nitrile rubber
    Patent number: 5403566
    Abstract: Rhodium and ruthenium catalysts can be recovered from solutions of hydrogenated nitrile rubber by addition onto organosiloxane-based absorbers.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: April 4, 1995
    Assignee: Bayer AG
    Inventors: Peter Panster, Stefan Wieland, Hartmuth Buding, Werner Obrecht
  • Thermoplastic molding compounds of polyamide and hydrogenated nitrile rubber
    Patent number: 5387647
    Abstract: The invention relates to thermoplastic molding compounds of 70 to 99.5% by weight thermoplastic polyamides and 30 to 0.5% by weight hydrogenated nitrile rubber and 0 to 29.5% by weight thermoplastic resin components and, optionally, standard additives in typical quantities. These thermoplastic molding compounds show high strength values, very good moldability and, above all, high weathering resistance.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: February 7, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Hartmuth Buding, Josef Merten, Karl-Heinz Ott
  • Thermoplastic molding compositions of aromatic polyether sulfone and hydrogenated nitrile rubber
    Patent number: 5362810
    Abstract: Thermoplastic molding compositions of A) 70 to 99.5% by weight of a thermoplastic aromatic polyether sulfone or mixtures of several thermoplastic polyether sulfones and B) 30 to 0.5% by weight of a hydrogenated nitrile rubber.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: November 8, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Hartmuth Buding, Thomas Eckel, Karl-Heinz Ott