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US5691264A Components and catalysts for the polymerization of olefins 失效
用于烯烃聚合的组分和催化剂

Components and catalysts for the polymerization of olefins
摘要:
Components of bimetallic catalysts for the polymerization of olefins comprising a compound of a transition metal M selected from Ti, V, Zr and Hf containing at least one M-.pi. bond, a compound of Ti or V not containing metal-.pi. bonds and a support comprising a magnesium halide. The catalysts obtained from the components of the invention are particularly suitable for gas-phase polymerization processes.
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