Metallocenes and catalysts for olefin-polymerisation
作者： Vladimir V. Bagrov , Ilya E. Nifant'ev
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摘要: A class of metallocenes formula (I): (ZR 1 m ) n (Cp)(A) r ML p L′ q (I) wherein , is a divalent group bridging Cp and A, heterocyclic cyclopentadienyl (II) or (II′), one X Y single bond, the other being an heteroatom; R 2 3 are hydrogen, halogen hydrocarbon radical, optionally containing heteroatoms; 4 derivative equal to Cp; M Ti, Zr Hf; 2; ranges from 0 4; 1; range 3; 4. Moreover, disclosed catalyst systems these metallocenes, useful in polymerization olefins.
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