Patents by Inventor Gerald Kehr

Gerald Kehr 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 preparation of a salt-like chemical compound and its use in catalyst systems for preparing polyolefins
    Patent number: 6861384
    Abstract: A process for preparing salt-like compounds of the formula (1), (C6R115)3MR2??(I) where R1 are identical or different and are each a hydrogen atom, a halogen atom, C1-C20-alkyl, C6-C14-aryl, C1-C10-alkoxy, C2-C10-alkenyl, C7-C20-arylalkyl, C7-C20-alkylaryl, C6-C10-aryloxy, C1-C10-haloalkyl, C6-C10-haloaryl, C2-C10-alkynyl or C3-C20-alkylsilyl, M is an element of main group III of the Periodic Table of the Elements, and R2 is a substituted or unsubstituted heterocycle, and the use of such compounds in catalyst systems for preparing polyolefins.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: March 1, 2005
    Assignee: Basell Polyolefine GmbH
    Inventors: Jörg Schottek, Gerhard Erker, Gerald Kehr
  • Process for preparation of salt-like chemical compound, and its use in catalyst systems for preparing polyolefins
    Publication number: 20040048992
    Abstract: A salt-like chemical compound of the formula (I),
    Type: Application
    Filed: September 10, 2003
    Publication date: March 11, 2004
    Inventors: Jorg Schottek, Gerhard Erker, Gerald Kehr
  • Saline chemical composition, method for producing the same and the use thereof in catalyst systems for producing polyolefins
    Publication number: 20030069426
    Abstract: A salt-like chemical compound of the formula (I),
    Type: Application
    Filed: September 13, 2002
    Publication date: April 10, 2003
    Inventors: Jorg Schottek, Gerhard Erker, Gerald Kehr
  • Zwitterionic transition metal compound which contains boron
    Patent number: 6486277
    Abstract: A boron-containing zwitterionic neutral transition metal compound which can advantageously be used for the polymerization of olefins is described. Here, the use of aluminoxanes, such as methylaluminoxane (MAO), as a cocatalyst can be dispensed with and a high catalyst activity and a good polymer morphology can nevertheless be achieved.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: November 26, 2002
    Assignee: Targor GmbH
    Inventors: Gerhard Erker, Gerald Kehr, Jörg Schottek, Roland Kratzer