FIELD: polymerization and copolymerization of ethylene. SUBSTANCE: proposed component comprises carrier of silicium oxide and catalytically active part which contains titanium, magnesium, chlorine and alkoxyl groups. Said component is prepared by activation of said carrier with solution of dialkyl magnesium or alkyl magnesium chloride in liquid aliphatic hydrocarbon (being used as a solvent). Then impregnation of thus activated silicium oxide with solution of titanium tetrachloride and titanium tetracholate (their quantities being equiamolar or about equiamolar) and magnesium chloride in liquid aliphatic or aromatic ester. Then thus prepared solid compound is treated by proportional quantity of alkylaluminium sesquichloride. EFFECT: improved quality of desired product. 4 cl, 2 tbl, 1 dwg
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