Patents by Inventor Jurgen Ismeier

Jurgen Ismeier 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).

  • Crosslinkable compositions, processes for the preparation thereof and the use thereof
    Patent number: 7645833
    Abstract: Novel crosslinkable compositions based on elastomers, at least one of which has carboxyl and/or carboxylate groups, are provided, these crosslinkable compositions containing special unsaturated organic salts of metal ions and a crosslinking system which acts as a free radical donor. Crosslinked elastomers which have excellent physical properties are obtainable therefrom. The novel crosslinkable compositions have a wide range of uses.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: January 12, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Dirk Achten, Claus Wrana, Christopher Ong, Martin Mezger, Hans Magg, Jürgen Ismeier, Hans-Rafael Winkelbach
  • CROSSLINKABLE COMPOSITIONS, PROCESSES FOR THE PREPARATION THEREOF AND THE USE THEREOF
    Publication number: 20090292064
    Abstract: Novel crosslinkable compositions based on elastomers, at least one of which has carboxyl and/or carboxylate groups, are provided, these crosslinkable compositions containing special unsaturated organic salts of metal ions and a crosslinking system which acts as a free radical donor. Crosslinked elastomers which have excellent physical properties are obtainable therefrom. The novel crosslinkable compositions have a wide range of uses.
    Type: Application
    Filed: September 25, 2006
    Publication date: November 26, 2009
    Inventors: Dirk Achten, Claus Wrana, Christopher Ong, Martin Mezger, Hans Magg, Jurgen Ismeier, Hans-Rafael Winkelbach
  • Vulcanizable composition based on ethylene-vinyl acetate copolymers, preparation thereof and use for production of products with elastomeric properties
    Publication number: 20080073815
    Abstract: A vulcanizable composition based on ethylene-vinyl acetate copolymers is prepared with vinyl acetate content of at least 45% by weight, based on the copolymer, and these can be crosslinked in the absence of peroxides. These mixtures comprise at least one organotin catalyst and a specific crosslinking agent. A process is moreover described for preparation of these vulcanizable compositions, and their use is described for production of products with elastomeric properties.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 27, 2008
    Inventors: Stefan Kelbch, Kay Varnhorn, Olaf Isenberg-Schulz, Ulrich Frenzel, Jurgen Ismeier
  • Process for the production of highly reactive polyisobutenes
    Patent number: 7291758
    Abstract: The present invention relates to a process for the production of highly reactive polyisobutenes with a content of terminal vinylidene groupings of greater than 80 mol % and an average molecular weight of 500 to 10,000 Dalton by cationic polymerization of isobutene or of isobutene and monomers copolymerizable with isobutene in the presence of solvent-stabilized transition metal complexes with weakly coordinated anions.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: November 6, 2007
    Assignee: Basf Aktiengesellschaft
    Inventors: Martin Bohnenpoll, Jürgen Ismeier, Oskar Nuyken, Mario Vierle, Dirk Kurt Schön, Fritz Kühn
  • Process for the production of highly reactive polyisobutenes
    Publication number: 20060173227
    Abstract: The present invention relates to a process for the production of highly reactive polyisobutenes with a content of terminal vinylidene groupings of greater than 80 mol % and an average molecular weight of 500 to 10,000 Dalton by cationic polymerization of isobutene or of isobutene and monomers copolymerizable with isobutene in the presence of solvent-stabilized transition metal complexes with weakly coordinated anions.
    Type: Application
    Filed: April 4, 2006
    Publication date: August 3, 2006
    Inventors: Martin Bohnenpoll, Jurgen Ismeier, Oskar Nuyken, Mario Vierle, Dirk Schon, Fritz Kuhn
  • Process for the preparation of isoolefin copolymers
    Publication number: 20040116627
    Abstract: The present invention provides a novel process for the preparation of isoolefin copolymers in the presence of zirconium halides and/or hafnium halides and organic acid halides, in particular for the preparation of butyl rubbers, as well as isoolefin copolymers constructed of isobutene, isoprene and optionally further monomers.
    Type: Application
    Filed: November 17, 2003
    Publication date: June 17, 2004
    Inventors: Gerhard Langstein, Jurgen Ismeier, Martin Bohnenpoll, Hans Ludwig Krauss, Rui Resendes
  • Process for the preparation of isoolefin copolymers
    Patent number: 6677421
    Abstract: The present invention provides a novel process for the preparation of isoolefin copolymers in the presence of zirconium halides and/or hafnium halides and organic acid halides, in particular for the preparation of butyl rubbers, as well as isoolefin copolymers constructed of isobutene, isoprene and optionally further monomers.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: January 13, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Langstein, Jürgen Ismeier, Martin Bohnenpoll, Hans Ludwig Krauss, Rui Resendes
  • Process for the production of highly reactive polyisobutenes
    Publication number: 20030176606
    Abstract: The present invention relates to a process for the production of highly reactive polyisobutenes with a content of terminal vinylidene groupings of greater than 80 mol % and an average molecular weight of 500 to 10,000 Dalton by cationic polymerization of isobutene or of isobutene and monomers copolymerizable with isobutene in the presence of solvent-stabilized transition metal complexes with weakly coordinated anions.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Inventors: Martin Bohnenpoll, Jurgen Ismeier, Oskar Nuyken, Mario Vierle, Dirk Kurt Schon, Fritz Kuhn
  • Process for the preparation of isoolefin copolymers
    Publication number: 20030040590
    Abstract: The present invention provides a novel process for the preparation of isoolefin copolymers in the presence of zirconium halides and/or hafnium halides and organic acid halides, in particular for the preparation of butyl rubbers, as well as isoolefin copolymers constructed of isobutene, isoprene and optionally further monomers.
    Type: Application
    Filed: August 16, 2002
    Publication date: February 27, 2003
    Inventors: Gerhard Langstein, Jurgen Ismeier, Martin Bohnenpoll, Hans Ludwig Krauss, Rui Resendes