Polyethylenes with increased molecular weight distribution

US9856339B2 · kind B2 · utility

Assignee

• Univation Technologies, LLC · US

Inventors

• Wesley R. Mariott · Freeport, US
• Kevin J. Cann · Montgomery, US
• John H. Moorhouse · Kendall Park, US
• Mark G. Goode · Hurricane, US
• Thomas Oswald · Fort Saskatchewan, CA

Key dates

• Filing date: Sep 2, 2014
• Grant date: Jan 2, 2018
• Expiry date: Sep 3, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2323/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Methods for making olefin polymerization catalysts and methods for making polyethylene polymers using the catalysts are provided. The polyethylenes can have a molecular weight distribution (MWD) of about 4.5 to about 14, a slope of strain hardening greater than about 0.75, and a melt flow ratio (MFR) greater than or equal to 8.33+(4.17×MWD).