Catalyst systems of the type comprising the Ziegler-Natta catalysts

US6051523A · kind A · utility

Assignee

• BASF SE

Inventors

• Meinolf Kersting · Neustadt, DE
• Klaus-Dieter Hungenberg · Birkenau, DE
• Peter Kölle · Bad Dürkheim, DE
• Jurgen Kerth · Eisenberg (Pfalz), DE

Key dates

• Filing date: Jun 20, 1997
• Grant date: Apr 18, 2000
• Expiry date: Jun 20, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Catalyst systems of the type comprising the Ziegler-Natta catalysts contain, as active components, PA0 a) a titanium-containing solid component which contains titanium, magnesium, halogen and a carboxylic ester as an electron donor, and, as a cocatalyst, PA0 b) an aluminum compound and PA0 c) if required, a further electron donor, a compound of the following formula I EQU R.sub.m.sbsb.1 Al--(OCOR.sup.1).sub.m.sbsb.2 (I) where PA0 R and R.sup.1 are identical or different and are each hydrogen or C.sub.1 -C.sub.8 -alkyl and PA0 m.sub.1 and m.sub.2 are each 1 or 2 and sum to give 3, being used as aluminum compound b) in the preactivation of the titanium-containing soild compound a) with the cocatalyst.