| 摘要 |
<p>The invention relates to a catalyst component which is a contact product of reagents comprising: silica which has a pore volume which exceeds 2.9 cc/gram and an average pore diameter which exceed 400 Angstroms; a metallocene of a first transition metal, activated by an alumoxane; a contact product of dialkylmagnesium and trialkylsilanol; a second transition metal source which exhibits a hydrogen response which is different from that of the metallocene; and an olefin of 4 to 20 carbon atoms. This catalyst component is activated by an aluminum alkyl activator.</p> |
