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:
Feb. 27, 2018
Filed:
Feb. 10, 2015
Univation Technologies, Llc, Houston, TX (US);
Daniel D. Vanderlende, Sugar Land, TX (US);
C. Jeff Harlan, Houston, TX (US);
Haiqing Peng, Sugar Land, TX (US);
Michael D. Awe, Langhorne, PA (US);
Roger L. Kuhlman, Lake Jackson, TX (US);
Ching-Tai Lue, Sugar Land, TX (US);
Timothy R. Lynn, Glen Gardner, NJ (US);
Wesley R. Mariott, Manvel, TX (US);
Daniel P. Zilker, Jr., Charleston, WV (US);
Univation Technologies, LLC, Houston, TX (US);
Abstract
A method of polymerizing olefins is disclosed. The method comprises contacting ethylene and at least one comonomer with a catalyst system to produce a polyolefin polymer that is multimodal. The catalyst system comprises a first catalyst that promotes polymerization of the ethylene into a low molecular weight (LMW) portion of the polyolefin polymer and a second catalyst that promotes polymerization of the ethylene into a high molecular weight (HMW) portion of the polyolefin polymer. The first catalyst and at least a portion of the second catalyst are co-supported to form a commonly-supported catalyst system and at least a portion of the second catalyst is added as a catalyst trim feed to the catalyst system.