FIELD: chemistry of polymers. SUBSTANCE: proposed component contains halogenides of magnesium and titanium together with compound having common formula R1OCH2C(R2R3)CH2OR1 where R1 is methyl, R2 and R3 are linear or branched C3-C5-alkyl, hydrogen, C3-C6-cycloalkyl and oxide of silicium or of aluminium. Ratio magnesium: titanium is 1.5:3.3, ratio titanium:mentioned above compound being 0.1:0.5. Content of silicium or aluminium is more than 40 mass % of total quantity of catalyst. EFFECT: improves quality of desired product. 2 cl, 2 tbl
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