Catalyst systems for the polymerization of C.sub.2 -C.sub.10 -alkenes

US5457171A · kind A · utility

Assignee

• BASF SE

Inventors

• Franz Langhauser · Bad Dürkheim, DE
• Martin Lux · Schifferstadt, DE
• Rolf Muelhaupt · Glückstadt, DE
• David Fischer · Breunigweiler, DE

Key dates

• Filing date: Aug 3, 1994
• Grant date: Oct 10, 1995
• Expiry date: Aug 3, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/6392
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Catalyst systems for the polymerization of C.sub.2 -C.sub.10 -alkenes contain, as active components, a metallocene complex of a metal of subgroup IV or V of the Periodic Table, an oligomeric alumina compound and a cyclic boron compound of the general formula IV ##STR1## where R.sup.18 to R.sup.20 are each C.sub.1 -C.sub.10 -alkyl which may be monosubstituted to trisubstituted by halogen, C.sub.6 -C.sub.15 -aryl or C.sub.1 -C.sub.10 -alkoxy, C.sub.4 -C.sub.7 -cycloalkyl which may be monosubstituted to trisubstituted by halogen, C.sub.1 -C.sub.10 -alkyl or C.sub.1 -C.sub.10 -alkoxy, C.sub.1 -C.sub.10 -alkoxy which may be monosubstituted to trisubstituted by halogen, C.sub.1 -C.sub.10 -alkyl or C.sub.6 -C.sub.15 -aryl, or C.sub.6 -C.sub.15 -aryl which may be monosubstituted to pentasubstituted by halogen, C.sub.1 -C.sub.10 -alkyl or C.sub.1 -C.sub.10 -alkoxy.