Patents by Inventor Rolf Josten

Rolf Josten 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 obtaining and isolating polychloroprene solids
    Patent number: 9938363
    Abstract: The invention relates to methods for isolating and obtaining polychloroprene solids, wherein an aqueous polychloroprene dispersion is brought in contact with steam containing coagulant, whereby the polychloroprene solid coagulates.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: April 10, 2018
    Assignee: ARLANXEO Deutschland GMBH
    Inventors: Thomas-Oliver Neuner, Heiner Stange, Rolf Josten, Rolf Feller, Mesut Fidan
  • Nitrile rubbers which optionally contain alkylthio terminal groups and which are optionally hydrogenated
    Patent number: 9034992
    Abstract: An improved polymerization and process method allows the production of special nitrile rubbers which are characterized by a specific anion content and an excellent storage stability and allow a particularly good vulcanization rate and moreover result in vulcanized materials that have advantageous properties, especially with regard to the contact with metal components of molded parts based on said vulcanized materials.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 19, 2015
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Rolf Josten, Michael Klimpel
  • METHOD FOR OBTAINING AND ISOLATING POLYCHLOROPRENE SOLIDS
    Publication number: 20140142268
    Abstract: The invention relates to methods for isolating and obtaining polychloroprene solids, wherein an aqueous polychloroprene dispersion is brought in contact with water vapor containing coagulant, whereby the polychloroprene solid coagulates.
    Type: Application
    Filed: April 19, 2012
    Publication date: May 22, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Thomas-Oliver Neuner, Heiner Stange, Rolf Josten, Rolf Feller, Mesut Fidan
  • POLYCHLOROPRENE SOLID HAVING THIXOTROPIC PROPERTIES
    Publication number: 20140046015
    Abstract: The invention relates to a polychloroprene solid on the basis of a polychloroprene dispersion, said solid having thixotropic properties.
    Type: Application
    Filed: April 17, 2012
    Publication date: February 13, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Thomas-Oliver Neuner, Heiner Stange, Rolf Josten, Rolf Feller, Mesut Fidan
  • NITRILE RUBBERS WHICH OPTIONALLY CONTAIN ALKYLTHIO TERMINAL GROUPS AND WHICH ARE OPTIONALLY HYDROGENATED
    Publication number: 20140011915
    Abstract: An improved polymerization and process method allows the production of special nitrile rubbers which are characterized by a specific anion content and an excellent storage stability and allow a particularly good vulcanization rate and moreover result in vulcanized materials that have advantageous properties, especially with regard to the contact with metal components of molded parts based on said vulcanized materials.
    Type: Application
    Filed: September 10, 2013
    Publication date: January 9, 2014
    Applicant: LANXESS Deutschland GmbH
    Inventors: Werner OBRECHT, Rolf JOSTEN, Michael KLIMPEL
  • Nitrile rubbers which optionally contain alkylthio terminal groups and which are optionally hydrogenated
    Patent number: 8623981
    Abstract: An improved polymerization and process method allows the production of special nitrile rubbers which are characterized by a specific anion content and an excellent storage stability and allow a particularly good vulcanization rate and moreover result in vulcanized materials that have advantageous properties, especially with regard to the contact with metal components of molded parts based on said vulcanized materials.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: January 7, 2014
    Assignee: LANXESS Deutschland GmbH
    Inventors: Werner Obrecht, Rolf Josten, Michael Klimpel
  • Nitrile rubbers which optionally contain alkylthio terminal groups and which are optionally hydrogenated
    Publication number: 20110123747
    Abstract: An improved polymerization and process method allows the production of special nitrile rubbers which are characterized by a specific anion content and an excellent storage stability and allow a particularly good vulcanization rate and moreover result in vulcanized materials that have advantageous properties, especially with regard to the contact with metal components of molded parts based on said vulcanized materials.
    Type: Application
    Filed: January 16, 2009
    Publication date: May 26, 2011
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Werner Obrecht, Rolf Josten, Michael Klimpel
  • Process for preparing emulsion polymers with high purity
    Publication number: 20030236348
    Abstract: The present invention relates to a process for preparing emulsion polymers with very high purity.
    Type: Application
    Filed: May 29, 2003
    Publication date: December 25, 2003
    Inventors: Peter Wendling, Hartmut Gobel, Rolf Josten, Paul Krieger, Hans-Rafael Winkelbach, Hans Christian Strauch, Werner Obrecht, Jean-Pierre Lambert
  • Branched copolymers based on unsaturated nitriles and on conjugated dienes
    Publication number: 20030171518
    Abstract: The present invention relates to branched copolymers based on unsaturated nitrites and conjugated dienes which are characterized in that the content of bonded unsaturated nitrile is 15 to 50 wt. %, the Mooney viscosity ranges from 15 to 150 MU [ML 1+4/100° C.], the chain branching ranges from 0 to 20° (determined by the &Dgr;&dgr;B value) and the solubility is ≧85 wt. % (measured in methyl ethyl ketone at 20° C.).
    Type: Application
    Filed: April 17, 2003
    Publication date: September 11, 2003
    Inventors: Hans Magg, Luigi Marinelli, Rolf Josten, Hans-Rafael Winkelbach