Preparation of polymers of ethylene by suspension polymerization

US5756607A · kind A · utility

Assignee

• BASF SE

Inventors

• Martin Lux · Schifferstadt, DE
• Roland Saive · Ludwigshafen, DE
• Franz Langhauser · Bad Dürkheim, DE
• Wolfgang Micklitz · Neustadt, DE
• Hans-Helmut Görtz · Freinsheim, DE
• Dieter Lilge · Schifferstadt, DE

Key dates

• Filing date: Jun 26, 1996
• Grant date: May 26, 1998
• Expiry date: Jun 26, 2016

Classification

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

Abstract

Homopolymers of ethylene or copolymers of ethylene with other olefins or mixtures thereof are prepared by suspension polymerization in the presence of catalyst systems by a process in which the catalyst systems used are those which contain, as active components, PA1 A) a finely divided carrier treated with trialkylaluminum, PA1 B) a metallocene complex, PA1 C) an open-chain or cyclic alumoxane compound and PA1 D) an alkali metal alkyl or alkaline earth metal alkyl or a mixture thereof.