Method for making and using a supported metallcene catalyst system

US6221981A · kind A · utility

Assignee

• Phillips Petroleum Company · US

Inventors

• Michael E. Jung · Los Angeles, US
• Helmut G. Alt · Bayreuth, DE
• Bryan E. Hauger · Claremore, US
• M. Bruce Welch · Bartlesville, US
• David W. Dockter · Kingwood, US
• Syriac J. Palackal · Bartlesville, US
• Antoni Jurkiewicz · Bartlesville, US

Key dates

• Filing date: Sep 14, 1998
• Grant date: Apr 24, 2001
• Expiry date: Sep 14, 2018

Classification

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

Abstract

Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The catalyst system is prepared by creating a catalyst system solution by combining an aluminoxane with a metallocene having a substituent which has olefinic unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, and separating the resulting solid metallocene-containing catalyst system from the reaction mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.