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.:

US 7829641 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 09, 2010

Filed:

Jul. 16, 2008
Applicants:

Bradley P. Etherton, Cincinnati, OH (US);

Stephen M. Imfeld, Mason, OH (US);

Philip J. Garrison, Houston, TX (US);

Inventors:

Bradley P. Etherton, Cincinnati, OH (US);

Stephen M. Imfeld, Mason, OH (US);

Philip J. Garrison, Houston, TX (US);

Assignee:

Equistar Chemicals, LP, Houston, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/64 (2006.01); C08F 4/76 (2006.01); C08F 4/52 (2006.01); C08F 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A two-stage cascade polymerization process for the production of multimodal polyethylene film resins with improved bubble stability is provided. The process comprises polymerizing ethylene or a mixture of ethylene and a Cα-olefin in two reactors arranged in series using a mixed single-site catalyst comprised of a bridged and a non-bridged indenoindolyl transition metal complex to form a multimodal polyethylene resin comprised of a lower molecular weight, higher density component and a higher molecular weight, lower density component.


Find Patent Forward Citations

Etherton, Bradley. (2010). Process for the preparation of multimodal polyethylene resins (U.S. Patent No. 7829641). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7829641

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