Bridged fluorenyl/indenyl metallocenes and the use thereof

US5886202A · kind A · utility

Inventors

• Michael E. Jung · Los Angeles, US
• Helmut G. Alt · Bayreuth, DE
• M. Bruce Welch · Bartlesville, US

Key dates

• Filing date: Sep 12, 1997
• Grant date: Mar 23, 1999
• Expiry date: Sep 12, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Bridged fluorenyl/indenyl metallocenes having substituents at the 3 position of the indenyl and the use thereof in the polymerization of olefins are disclosed. Also a new method for preparing bridged fluorenyl/indenyl ligands wherein the indenyl has a substituent in the 3 position and the preparation of metallocenes with such ligands.