FIELD: chemical or physical processes.
SUBSTANCE: invention relates to catalyst systems containing a Ziegler—Natta catalyst component. Described is a method of producing a catalyst on an olefin polymerisation catalyst, involving: (i) contacting: (a) fluorinated aluminum oxide with a silicon dioxide coating; (b) magnesium compound; and (c) first titanium (IV) compound to form a first solid precatalyst; (ii) contacting a first solid precatalyst with an organoaluminium compound to form a second solid precatalyst; and (iii) contacting a second solid precatalyst with a second titanium (IV) compound to form a catalyst on a support, wherein the magnesium compound is MgCl2, and the organoaluminium compound contains trimethylaluminium, triethylaluminium, tri-n-propylaluminium, tri-n-butylaluminium, triisobutylaluminium, tri-n-hexylaluminium, tri-n-octylaluminium, or any combination thereof.
EFFECT: technical result is high catalytic activity.
19 cl, 6 dwg, 1 tbl
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