Process for preparing solutions of oligomeric methylaluminoxanes

US5427992A · kind A · utility

Assignee

• Witco Corporation · US

Inventors

• Jurgen Graefe · Trostberg, DE
• Stefan Gurtzgen · Wuppertal, DE
• Karl-Heinz Muller · Wissen, DE
• Jürgen Schneider · Kirchzarten, DE
• Rolf Schrader · Braunschweig, DE

Key dates

• Filing date: Sep 8, 1992
• Grant date: Jun 27, 1995
• Expiry date: Sep 8, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00094
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing solutions of oligomeric methylaluminoxanes, which contain trimethylaluminum in the free and/or complexed form, in hydrocarbons by partial hydrolysis of trimethylaluminum with water and to carrying out this process in a rotor/stator reaction machine. The product obtained is suitable for preparing highly active polymerization catalysts.