Metallocene compound and polymerization catalyst comprising heterocyclic group

US6469114B1 · kind B1 · utility

Assignee

• Basell Polyolefins · DE

Inventors

• Jorg Schottek · Frankfurt, DE
• Roland Kratzer · Kriftel, DE
• Andreas Winter · Königstein, DE
• Volker Fraaije · Frankfurt, DE
• Michael-Joachim Brekner · Frankfurt am Main, DE
• Markus Oberhoff · Speyer, DE

Key dates

• Filing date: Sep 14, 2000
• Grant date: Oct 22, 2002
• Expiry date: Sep 14, 2020

Classification

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

Abstract

Disclosed are compounds of the following core structure, and their use as polymerization catalysts: wherein M1 is a group lVb transition metal, R5 is a substituted aryl group, and Ra forms a heteroatom-containing ring fused to the cyclopentadienyl ring.