Multinuclear metallocene compound, a process for its preparation and its use as catalyst

US6262197A · kind A · utility

Assignee

• Targor GmbH · DE

Inventors

• Michael Aulbach · Hofheim, DE
• Michael-Joachim Brekner · Frankfurt am Main, DE
• Frank Kuber · Oberursel, DE
• Roland Zenk · Bayreuth, DE

Key dates

• Filing date: Apr 26, 1996
• Grant date: Jul 17, 2001
• Expiry date: Apr 26, 2016

Classification

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

Abstract

The present invention relates to a metallocene compound containing at least two metallocene fragments L--MX.sub.2 --L which are different from one another and having the formula I ##STR1## where B is a bridging unit, m is an integer from 2 to 100,000, M is a metal atom of group IVb, Vb or VIb of the Periodic Table of the Elements, PA1 X are identical or different in one metallocene fragment L--MX.sub.2 --L and are each, independently of one another, hydrogen, a C.sub.1 -C.sub.40 -hydrocarbon-containing group, an OH group, a halogen atom or a pseudohalogen, L are identical or different in one metallocene fragment and are each, independently of one another, a .pi. ligand or another electron donor. The metallocene compound can advantageously be used as a catalyst component for olefin polymerization.