| 摘要 |
The invention relates to a process for the manufacture of a solid catalytic component for the polymerization or copolymerization of olefins, resulting in a polymer or copolymer with broadened molecular mass distribution. The process includes a first stage including bringing into contacta) a solid support including at its surface at least 5 hydroxyl groups per square nanometre (OH/nm2) andb) an organic magnesium derivative, and optionally, preferably,c) an aluminoxane,to obtain a first solid, and then a second stage including bringing the first solid and a chlorinating agent into contact to obtain a second solid and then, in a later stage, impregnation of the second solid with a transition metal derivative.
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