Multiple catalyst system

US6566462B2 · kind B2 · utility

Assignee

• Univation Technologies, LLC · US

Inventors

• Rex E. Murray · Cross Lanes, US
• Simon Mawson · Charleston, US
• John F. Szul · Nitro, US
• Kersten Anne Erickson · South Charleston, US
• Tae Hoon Kwack · Fairport, US
• Frederick J. Karol · Montgomery, US
• David James Schreck · Cross Lanes, US

Key dates

• Filing date: Oct 10, 2001
• Grant date: May 20, 2003
• Expiry date: Oct 13, 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 olefins comprising reacting olefins with a catalyst system comprising an activator, a metallocene and a second metal compound based on bidentate ligands containing heterocycle moieties.