The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2011
Filed:
Oct. 01, 2009
Qing Yang, Bartlesville, OK (US);
Kumudini C. Jayaratne, Groningen, NL;
Michael D. Jensen, Laurel, MD (US);
Max P. Mcdaniel, Bartlesville, OK (US);
Joel L. Martin, Bartlesville, OK (US);
Matthew G. Thorn, Mason, OH (US);
Jerry T. Lanier, Bartlesville, OK (US);
Tony R. Crain, Niotaze, KS (US);
Qing Yang, Bartlesville, OK (US);
Kumudini C. Jayaratne, Groningen, NL;
Michael D. Jensen, Laurel, MD (US);
Max P. McDaniel, Bartlesville, OK (US);
Joel L. Martin, Bartlesville, OK (US);
Matthew G. Thorn, Mason, OH (US);
Jerry T. Lanier, Bartlesville, OK (US);
Tony R. Crain, Niotaze, KS (US);
Chevron Phillips Chemical Company LP, The Woodlands, TX (US);
Abstract
This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging η-cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non-bridging η-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with a bimodal molecular weight distribution.