Method for preparing alkoxyl magnesium solid particles

Abstract

The invention provides a method for preparing spherical alkoxyl magnesium particles with excellent properties. In the method, magnesium, alcohol and a halogenating agent are reacted at a reflux temperature, so that the alkoxyl magnesium particles are obtained. The alkoxyl magnesium particles have the advantages of higher bulk density, good particle shape and particular suitability for serving as a catalyst carrier of an olefin polymerization reaction.

Description

technical field

[0001] The invention relates to a preparation method of alkoxymagnesium solid particles, more specifically, to a spherical alkoxymagnesium solid particle with a high bulk density and an average particle diameter of 10-80 μM, which can be used to prepare olefin polymerization catalysts The preparation method and the spherical alkoxymagnesium particles obtained by the preparation method. Background technique

[0002] As we all know, olefin polymers are usually obtained by polymerization under the catalysis of Ziegler-Natta catalysts composed of titanium compounds and organoaluminum compounds. For example, in the preparation process of polypropylene, generally, the catalyst uses a solid catalyst component composed of magnesium, titanium, halogen and an electron donor compound as the main catalyst component, an organoaluminum compound as the auxiliary catalyst component and as a stereoregularity The enhancer contains organosilicon compounds with alkoxy groups as...

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