| 摘要 |
<p>A selfsupported hybrid olefin polymerization catalyst comprising a ZieglerNatta component and a metallocene component whereby the metallocene component is affixed to the ZieglerNatta component is disclosed. In the hybrid catalyst, the ZieglerNatta component includes a solid complex of magnesium, transition metal, and alkoxide moieties where the transition metal is selected from one or more metals having an oxidation state of plus;3, plus;4, plus;5, and mixtures thereof. A method of making the hybrid catalyst and a method of polymerizing olefins using the hybrid catalyst also are disclosed. The hybrid catalyst is capable of producing polyolefins having a broad molecular weight, or bimodal distribution in high yield.</p> |
