| 摘要 |
1. Process for the preparation of a transition metal component for a catalyst system for olefin polymerization, in which an organomagnesiumaluminium reaction product is formed by reaction, in a liquid medium, of a monohalogenated, alkylated or alkoxylated magnesium compound with an organoaluminium compound, and the reaction product is then subjected to a chlorination and to a treatment with a compound of a transition metal chosen from Ti, V, Zr and Cr, characterized in that the organoaluminium compound employed is at least one aluminosiloxane derivative of formula see diagramm : EP0206893,P12,F2 in which R1 , R2 , R3 , R4 and R5 , which are identical or different, denote a C1 - C12 all radical or hydrogen.
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