| 摘要 |
The invention relates to the homopolymerization and in particular copolymerization of ethylene with higher alpha-monoolefins by means of a Ziegler catalyst system comprising (1) a titanium catalyst component and (2) an aluminium catalyst component, where (1) is the product (VI) obtained by (1.1) first combining (1.1.1) an inorganic oxidic support material (I) and (1.1.2) a solution (II) of (IIa) a lower alcohol, (IIb) a titanium trichloride and (IIc) magnesium chloride to form a dispersion (III), and evaporating this to form an intermediate (IV), and (1.2) then combining (1.2.1) the intermediate (IV) from (1.1) and (1.2.2) an aluminium component (V), the resultant product (VI) being the catalyst component (1), characterized in that (1) is the product (VI) obtained from (1.2) on use of an aluminium component (V) comprising (1.2.2.1) a complex compound of a certain ester and a certain aluminium compound and (1.2.2.2) - optionally - a certain free aluminium compound.
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