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:
Oct. 19, 2010
Filed:
Sep. 03, 2008
Bradley P. Etherton, Cincinnati, OH (US);
Stephen M. Imfeld, Mason, OH (US);
Mohan Sasthav, Hamilton, OH (US);
Bradley P. Etherton, Cincinnati, OH (US);
Stephen M. Imfeld, Mason, OH (US);
Mohan Sasthav, Hamilton, OH (US);
Equistar Chemicals, LP, Houston, TX (US);
Abstract
A thick film and process to prepare polyethylene useful for the film are disclosed. Ethylene is polymerized in two reaction zones with a C-Cα-olefin in the presence of a catalyst system comprising an activator, a supported bridged zirconium complex, and a supported non-bridged zirconium complex. The process yields medium density to linear low density polyethylene having a melt index from 0.20 to 1.0 dg/min. Thick films from the polyethylene have a superior combination of high impact strength and high modulus.