Patents by Inventor Jeffrey A. Simms

Jeffrey A. Simms 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).

  • POLYMERIZATION CATALYSTS FOR PRODUCTION OF POLYETHYLENE WITH HIGH MOLECULAR WEIGHT
    Publication number: 20220389137
    Abstract: The catalyst system includes a heterogeneous procatalyst, an electron donor, and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula Cp2TiXnTiCp2 or Cp2TiXn. In formula Cp2TiXn, each Cp is a cyclopentadienyl substituted with at least one R1, wherein R1 is (C1-C10)alkyl; and each X is independently monoanionic or neutral, wherein each X is independently (C1-C40)hydrocarbon, (C1-C40)heterohydrocarbon, (C1-C40)hydrocarbyl, (C1—C40)heterohydrocarbyl, or a halogen atom.
    Type: Application
    Filed: July 30, 2020
    Publication date: December 8, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Linfeng Chen, Kurt F. Hirsekorn, Jeffrey A. Simms, David M. Pearson