Process for the preparation of spherical particles of magnesium alkoxide

US5227542A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Udo Horns · Rheinfelden (Baden), DE
• Thomas Jostmann · Dülmen, DE
• Klaus-Dieter Kassmann · Marl, DE
• Reinhard Matthes · Rheinfelden (Baden), DE
• Hartwig Rauleder · Rheinfelden (Baden), DE

Key dates

• Filing date: Sep 1, 1992
• Grant date: Jul 13, 1993
• Expiry date: Sep 1, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C29/68
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention involves spherical particles of magnesium alkoxide and a process for their preparation. Specifically, spherical magnesium alkoxide is produced by spray drying of an alcoholic solution of the corresponding carboxylated magnesium alkoxide and subsequent drying and decarboxylation, characterized in that the solution is sprayed via a two-material nozzle with inner atomization, which is operated in the part-load range at 10 to 30% of its capacity, into an inert accompanying gas which is under a pressure of 1.0 to 1.2 bar, has been preheated to 100.degree.-140.degree. C. and is fed cocurrently, after which the resulting finely divided carboxylated magnesium alkoxide is dried and is decarboxylated. The magnesium alkoxide is used for the preparation of a catalyst for the polymerization of .alpha.-olefins.