Patents by Inventor Margarete Lecrec

Margarete Lecrec 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 producing high molecular weight polyethylene
    Patent number: 8722819
    Abstract: In a process for producing polyethylene having a molecular weight of at least 3×105 g/mol as determined by ASTM 4020, ethylene is contacted under polymerization conditions with a slurry of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand, wherein the slurry further includes a scavenger comprising an alkyl magnesium compound.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: May 13, 2014
    Assignee: Ticona GmbH
    Inventors: Dominique Robert, Julia Hufen, Kerstin Lüdtke, Jens Ehlers, Gary Diamond, Margarete Lecrec, Guang Zhu
  • PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYETHYLENE
    Publication number: 20130090438
    Abstract: In a process for producing polyethylene having a molecular weight of at least 3×105 g/mol as determined by ASTM 4020, ethylene is contacted under polymerization conditions with a slurry of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand, wherein the slurry further includes a scavenger comprising an alkyl magnesium compound.
    Type: Application
    Filed: July 1, 2011
    Publication date: April 11, 2013
    Applicant: TICONA GMBH
    Inventors: Dominique Robert, Julia Hufen, Kerstin Lüdtke, Jens Ehlers, Gary Diamond, Margarete Lecrec, Guang Zhu