| 摘要 |
<p>A process is described for the preparation of ethylene copolymers having a wide molecular weight distribution, characterized in that it is carried out in the presence of meso- and rac- stereoisomeric mixtures of metallocene compounds having general formula (I), wherein A' and A'', the same or different, are a radical of the η5-tetrahydroindenyl type (Ia).</p> |
