Copolymerization of ethylene and 1,5-hexadiene with zirconocene catalysts

Naofumi Naga, Yukio Imanishi

研究成果: Article査読

46 被引用数 (Scopus)

抄録

Copolymerization of ethylene and 1,5-hexadiene (HD) was carried out with non-bridged or bridged zirconocene catalysts using methylaluminoxane (MAO) as a cocatalyst. The resulting copolymers were extracted with boiling o-dichlorobenzene (ODCB) to fractionate into soluble and insoluble parts. The ligand structure of zirconocenes, the feed ratio of HD, and the catalyst concentration strongly affected the copolymer composition. In the copolymerization with non-bridged zirconocene catalysts, the amount of boiling ODCB-soluble part decreased with increasing HD content in the copolymer. On the other hand, with bridged zirconocene catalysts, it increased with increasing HD content in the copolymer. The bridged zirconocene catalysts were apt to take in more HD than non-bridged catalysts. Effect of catalyst concentration was investigated in relation to crosslinking reaction. Temperature-rising elution fractionation (TREF) of the boiling ODCB-soluble part was conducted to show the occurrence of heterogenous composition in copolymers obtained with some specific zirconocene catalysts.

本文言語English
ページ(範囲)771-777
ページ数7
ジャーナルMacromolecular Chemistry and Physics
203
4
DOI
出版ステータスPublished - 2002 3 15
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

フィンガープリント

「Copolymerization of ethylene and 1,5-hexadiene with zirconocene catalysts」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル