Catalyst composition, method of polymerization and polymer therefrom

US6897273B2 · kind B2 · utility

Assignee

• Univation Technologies, LLC · US

Inventors

• John F. Szul · Nitro, US
• Tae Hoon Kwalk · Montgomery, US
• David James Schreck · Cross Lanes, US
• Simon Mawson · Charleston, US
• Matthew McKee · Blacksburg, US
• Kersten Anne Terry · Charleston, US
• Mark G. Goode · Hurricane, US
• Gregory T. Whiteker · Carmel, US
• Eric Lucas · La Boissière, FR

Key dates

• Filing date: Dec 4, 2000
• Grant date: May 24, 2005
• Expiry date: Oct 1, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/943
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to a process to polymerize olefin(s) comprising combining a solution, slurry or solid comprising one or more bulky ligand metallocene catalyst compounds, an optional support, and or one or more activator(s) with a solution comprising one or more phenoxide catalyst compounds, and thereafter, introducing one or more olefin(s) and the combination into a polymerization reactor. This invention also relates to a polymer of ethylene wherein the polymer has a density of 0.910 to 0.930 g/cc, a melt index of 0.3 to 2.0 dg/min, and a 15 to 35 μm thick film of the polymer has a 45° gloss of 60 or more, a haze of 7% or less, and a dart impact of 600 g or more.