Process for the preparation of ethylene (co)polymers

US5292837A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Andreas Heinrich · Heiligenhaus, DE
• Ludwig Bohm · Mainz, DE
• Hans-Albrecht Scholz · Hochheim, DE

Key dates

• Filing date: Aug 5, 1992
• Grant date: Mar 8, 1994
• Expiry date: Aug 5, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

For the homopolymerization of ethylene or for the copolymerization of ethylene with other 1-olefins, a catalyst is used which comprises a trialkylaluminum compound and the entire product from the reaction of a magnesium alkoxide which is dissolved, suspended or dispersed as a gel in an inert solvent, with a tetravalent transition-metal compound and an organoaluminum compound, washing with an inert solvent and reacting with a halogenated metal compound. A polymer having coarse particles and a high bulk density is obtained.