Process for the production of highly reactive polyisobutenes

US7291758B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Martin Bohnenpoll · Cologne, DE
• Jurgen Ismeier · Forstinning, DE
• Oskar Nuyken · Munich, DE
• Mario Vierle · Günzburg, DE
• Dirk Schon · Oderberg, DE
• Fritz Kuhn · Waldkirch, DE

Key dates

• Filing date: Apr 4, 2006
• Grant date: Nov 6, 2007
• Expiry date: Apr 4, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the production of highly reactive polyisobutenes with a content of terminal vinylidene groupings of greater than 80 mol % and an average molecular weight of 500 to 10,000 Dalton by cationic polymerization of isobutene or of isobutene and monomers copolymerizable with isobutene in the presence of solvent-stabilized transition metal complexes with weakly coordinated anions.