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. 08, 2010
Filed:
Nov. 18, 2009
Qing Yang, Bartlesville, OK (US);
Michael D. Jensen, Laurel, MD (US);
Joel L. Martin, Bartlesville, OK (US);
Matthew G. Thorn, Mason, OH (US);
Max P. Mcdaniel, Bartlesville, OK (US);
Youlu Yu, Bartlesville, OK (US);
David C. Rohlfing, Bartlesville, OK (US);
Qing Yang, Bartlesville, OK (US);
Michael D. Jensen, Laurel, MD (US);
Joel L. Martin, Bartlesville, OK (US);
Matthew G. Thorn, Mason, OH (US);
Max P. McDaniel, Bartlesville, OK (US);
Youlu Yu, Bartlesville, OK (US);
David C. Rohlfing, Bartlesville, OK (US);
Chevron Phillips Chemical Company, LP, The Woodlands, TX (US);
Abstract
This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising 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 low levels of long chain branching.