Copolymerization of ethylene and cyclopentene with zirconocene catalysts: Effect of ligand structure of zirconocenes

Naofumi Naga, Yukio Imanishi

研究成果: Article査読

44 被引用数 (Scopus)

抄録

Copolymerization of ethylene and cyclopentene (CPE) was carried out with various non-bridge and bridged zirconocene catalysts using methylaluminoxane as a cocatalyst. Non-bridged metallocene catalysts effected ethylene homopolymerization without copolymerization. On the other hand, bridged zirconocene catalysts produced copolymers containing cis-1,2-cyclopentane units. Among the used catalysts, rac-ethylenebis(indenyl)zirconium dichloride [Et(Ind)2ZrCl2] gave copolymers containing the highest amount of CPE units by 1,2-insertion of 1,3-insertion. Temperature-rising elution fractionation of the copolymers using 1,2-dichlorobenzene as a solvent showed a broad distribution of copolymer composition in copolymers obtained by specific zirconocene catalysts.

本文言語English
ページ(範囲)159-165
ページ数7
ジャーナルMacromolecular Chemistry and Physics
203
1
DOI
出版ステータスPublished - 2002 1月 9
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 物理化学および理論化学
  • 有機化学
  • ポリマーおよびプラスチック
  • 材料化学

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