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:
Sep. 21, 2021
Filed:
Nov. 09, 2020
Chevron Phillips Chemical Company Lp, The Woodlands, TX (US);
Max P. McDaniel, Bartlesville, OK (US);
Carlton E. Ash, Owasso, OK (US);
Kathy S. Clear, Bartlesville, OK (US);
Eric D. Schwerdtfeger, Bartlesville, OK (US);
Carlos A. Cruz, Bartlesville, OK (US);
Jeremy M. Praetorius, Bartlesville, OK (US);
Youlu Yu, Bartlesville, OK (US);
Chevron Phillips Chemical Company LP, The Woodlands, TX (US);
Abstract
Catalyst compositions containing a metallocene compound, a solid activator, and a co-catalyst, in which the solid activator or the supported metallocene catalyst has a d50 average particle size of 15 to 50 μm and a particle size distribution of 0.5 to 1.5, can be contacted with an olefin in a loop slurry reactor to produce an olefin polymer. A representative ethylene-based polymer produced using the catalyst composition has excellent dart impact strength and low gels, and can be characterized by a HLMI from 4 to 10 g/10 min, a density from 0.944 to 0.955 g/cm, a higher molecular weight component with a Mn from 280,000 to 440,000 g/mol, and a lower molecular weight component with a Mw from 30,000 to 45,000 g/mol and a ratio of Mz/Mw ranging from 2.3 to 3.4.