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:
Jul. 30, 2013
Filed:
Dec. 22, 2010
F. David Hussein, Cross Lanes, WV (US);
Kevin J. Cann, Rocky Hill, NJ (US);
Ann M. Schoeb-wolters, Lebanon, NJ (US);
Phuong A. Cao, Old Bridge, NJ (US);
Bruce J. Savatsky, Kingwood, TX (US);
Eric J. Markel, Kingwood, TX (US);
Daniel P. Zilker, Jr., Charleston, WV (US);
Garth R. Giesbrecht, The Woodlands, TX (US);
F. David Hussein, Cross Lanes, WV (US);
Kevin J. Cann, Rocky Hill, NJ (US);
Ann M. Schoeb-Wolters, Lebanon, NJ (US);
Phuong A. Cao, Old Bridge, NJ (US);
Bruce J. Savatsky, Kingwood, TX (US);
Eric J. Markel, Kingwood, TX (US);
Daniel P. Zilker, Jr., Charleston, WV (US);
Garth R. Giesbrecht, The Woodlands, TX (US);
Univation Technologies, LLC, Houston, TX (US);
Abstract
Methods for gas phase olefin polymerization are provided. The method can include combining a spray dried catalyst system with a diluent to produce a catalyst slurry. The catalyst system can include a metallocene compound. Ethylene, a continuity additive, and the catalyst slurry can be introduced to a gas phase fluidized bed reactor. The reactor can be operated at conditions sufficient to produce a polyethylene. The spray dried catalyst system can have a catalyst productivity of at least 12,000 grams polyethylene per gram of the catalyst system.