| 摘要 |
The invention relates to the homopolymerisation and copolymerisation of alpha -monoolefins by means of a Ziegler catalyst system comprising (1) a titanium catalyst component obtained by (1.1) in a first step (1.1.1) reacting a preparation of (1.1.1.1) a titanium compound (I) and (1.1.1.2) a liquid alkane (II) and (1.1.2) a homogeneous solution of (1.1.2.1) a benzene hydrocarbon (III), (1.1.2.2) trichoroacetic acid (IV) and (1.1.2.3) magnesium ethylate (V) with one another, giving a suspended solid (VI), and then (1.2) in a second step isolating the solid (VI), washing it with an alkane (VII) and drying it; the solid obtained here is the catalyst component (1) and (2) an aluminium catalyst component which is conventional in this context, characterised in that (1) is a titanium catalyst component obtained by employing as (I) in (1.1.1) under (1.1.1.1) a finely divided titanium compound of the formula TiCl3 . xAlCl3 , where x is 0.15 to 0.40, and, as (III) in (1.1.2) under (1.1.2.1), toluene.
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