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:
Mar. 02, 2010
Filed:
May. 21, 2008
Sandor Nagy, Naperville, IL (US);
Barbara M. Tsuie, Cincinnati, OH (US);
Stephen M. Imfeld, Mason, OH (US);
Sandor Nagy, Naperville, IL (US);
Barbara M. Tsuie, Cincinnati, OH (US);
Stephen M. Imfeld, Mason, OH (US);
Equistar Chemicals, LP, Houston, TX (US);
Abstract
A process for making polyethylene having an uncommon but valuable balance of broad molecular weight distribution and a low level of long-chain branching is disclosed. The process comprises polymerizing ethylene in a single reactor in the presence of an α-olefin and a catalyst comprising an activator and a supported dialkylsilyl-bridged bis(indeno[1,2-b]indolyl)zirconium complex. The polyethylene, which has an M/Mgreater than 10 and a viscosity enhancement factor (VEF) of less than 2.5, is valuable for making blown films.