CATALYTIC COMPOSITION FOR POLYMERIZATION OF OLEFIN AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a catalytic composition for the polymerization of olefin. The composition comprises: at least one organic magnesium compound; at least one titanium compound; at least one hydroxyl compound; at least one organic chloride compound of aluminium, boron, sulphur, or silicon; and at least one reaction product of polybutadiene block copolymer. The catalytic composition of the present invention has well-shaped particles, and a narrow particle size distribution; a polymerization reaction of olefin with the catalytic composition produces well-shaped polymer particles having a high bulk density (BD) and an excellent overall catalytic performance. The present invention also relates to a preparation method for the catalytic composition and applications thereof, particularly for use in the homopolymerization and copolymerization of olefins such as ethylene, propylene, butene, hexene, and octene.