Metallocenes, polymerization catalyst systems, their preparation, and use

US6992035B2 · kind B2 · utility

Assignee

• Phillips Petroleum Company · US

Inventors

• M. Bruce Welch · Bartlesville, US
• Syriac J. Palackal · Bartlesville, US
• Bryan E. Hauger · Claremore, US
• David W. Dockter · Kingwood, US
• Alexander Koppl · Bayreuth, DE
• Helmut G. Alt · Bayreuth, DE

Key dates

• Filing date: Sep 23, 2002
• Grant date: Jan 31, 2006
• Expiry date: Jul 28, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/65916
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Metallocene having two cyclic dienyl groups connected by a single carbon having an aryl substituent and a terminally unsaturated hydrocarbyl substituent, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.