| 摘要 |
Catalytic system comprising an ionic metallocene derived from a transition metal, a catalytic solid containing an element from group IVB, magnesium and a halogen, and an aluminium derivative. Process for the preparation of this catalytic system according to which a mixture of a neutral metallocene and of the catalytic solid is prepared, the mixture thus obtained is brought into contact with an aluminium derivative and an ionising agent is added thereto. Process for the (co)polymerisation of an olefin, according to which a mixture of the neutral metallocene and of the catalytic solid is prepared, the mixture thus obtained is brought into contact with an aluminium derivative and the olefin, and the ionising agent is added thereto. |
