Preparation of propene oligomers

US5321189A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans-Joachim Mueller · Havelsee, DE
• Bernd Lothar Marczinke · Frankfurt, DE
• Juergen Kerth · Eisenberg (Pfalz), DE
• Rainer Konrad · Putlitz, DE
• Guenther Schweier · Friedelsheim, DE
• Max Strohmeyer · Schifferstadt, DE
• Bernhard Rieger · Langenau, DE

Key dates

• Filing date: Feb 25, 1993
• Grant date: Jun 14, 1994
• Expiry date: Feb 25, 2013

Classification

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

Abstract

A process for propene oligomerization catalyzed by transition metal complexes in liquid phase to give propene oligomers with a high content of terminal double bonds, comprises oligomerizing propene in the presence of a catalyst of the formula I EQU Cp.sub.2 MX.sub.2 I where Cp is an unsubstituted cyclopentadienyl unit and/or a mono-C.sub.1 -C.sub.4 -alkylcyclopentadienyl unit, M is zirconium or hafnium and the ligands X are each hydride and/or halide and/or methyl, and in the presence of an aluminoxane cocatalyst, and where the ratio of the amounts of the catalyst I and the aluminoxane cocatalyst is such that the M/Al atomic ratio is from 1:250 to 1:1000, employing a temperature of from 50.degree. to 110.degree. C. and a pressure of from 30 to 100 bar.