Ziegler-natta catalyst systems containing specific organosilicon compounds

US5773535A · kind A · utility

Assignee

• BASF SE

Inventors

• Holger Friedrich · Frankenthal (Pfalz), DE
• Stephan Huffer · Birkenfeld, DE
• Roland Hingmann · Ladenburg, DE

Key dates

• Filing date: Mar 10, 1997
• Grant date: Jun 30, 1998
• Expiry date: Mar 10, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Catalyst systems of the Ziegler-Natta type comprising as active constituents PA0 a) a titanium-containing solid component prepared using a titanium compound, a compound of magnesium, a halogenating agent and an electron donor component, PA0 b) an aluminum compound and PA0 c) as further electron donor component, an organosilicon compound of the formula (I) EQU R.sup.1 R.sup.2 si(OR.sup.3).sub.2 (I) PA0 in which PA1 R.sup.1 is a C.sub.1 -C.sub.10 -alkyl radical or a C.sub.3 -C.sub.8 -cycloalkyl radical, R.sup.2 is a 2,4,4,6,6-pentamethylheptyl radical and PA1 R.sup.3 is a C.sub.1 -C.sub.8 -alkyl radical, PA0 are particularly suitable for the preparation of polymers of C.sub.2 -C.sub.10 -alk-1-enes.