Patents by Inventor Rolf Geerts

Rolf Geerts 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).

  • Organometallic Fluorenyl Compounds, Preparations, and Use
    Publication number: 20060122344
    Abstract: Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.
    Type: Application
    Filed: May 10, 2002
    Publication date: June 8, 2006
    Applicant: Phillips Petroleum Company
    Inventors: HELMUT ALT, SYRIAC PALACKAL, KONSTANTINOS PATSIDIS, M. WELCH, ROLF GEERTS, ERIC HSIEH, MAX MCDANIEL, GIL HAWLEY, PAUL SMITH
  • Polymerization catalyst systems and processes using alkyl lithium compounds as a cocatalyst
    Publication number: 20050245697
    Abstract: A catalyst system composition comprising a chromium compound supported on a silica-titania support, wherein said catalyst system has been reduced with carbon monoxide, and a cocatalyst selected from the group consisting of i) alkyl lithium compounds, ii) dialkyl aluminum alkoxides in combination with at least one metal alkyl selected from the group consisting of alkyl zinc compounds, alkyl aluminum compounds, alkyl boron compounds, and mixtures thereof and iii) mixtures thereof can be used to polymerize olefins to produce a low density polymer with a decreased melt index and/or high load melt index. This catalyst system also can be used with a Ziegler-Natta catalyst system to polymerize olefins. Polymerization processes using these catalyst system compositions are also provided.
    Type: Application
    Filed: July 5, 2005
    Publication date: November 3, 2005
    Inventors: Max McDaniel, Joseph Shveima, Elizabeth Benham, Rolf Geerts, James Smith
  • Polymerization catalyst systems and processes using alkyl lithium compounds as a cocatalyst
    Publication number: 20050090629
    Abstract: A catalyst system composition comprising a chromium compound supported on a silica-titania support, wherein said catalyst system has been reduced with carbon monoxide, and a cocatalyst selected from the group consisting of i) alkyl lithium compounds, ii) dialkyl aluminum alkoxides in combination with at least one metal alkyl selected from the group consisting of alkyl zinc compounds, alkyl aluminum compounds, alkyl boron compounds, and mixtures thereof and iii) mixtures thereof can be used to polymerize olefins to produce a low density polymer with a decreased melt index and/or high load melt index. This catalyst system also can be used with a Ziegler-Natta catalyst system to polymerize olefins. Polymerization processes using these catalyst system compositions are also provided.
    Type: Application
    Filed: November 15, 2004
    Publication date: April 28, 2005
    Inventors: Max McDaniel, Joseph Shveima, Elizabeth Benham, Rolf Geerts