Ethylene homopolymerization and ethylene/1-butene copolymerization catalyzed by a [1,8-C10H6(NR)2]TiCl2-cocatalyst system

Kotohiro Nomura, Naofumi Naga, Kazuo Takaoki

研究成果: Article査読

57 被引用数 (Scopus)

抄録

[1,8-C10H6(NR)2]TiCl2 [R = SiiPr3 (3a), SitBuMe2 (3b), SiMe3 (3c)] complexes have been prepared from dilithio salts [1,8-C10H6(NR)2]Li2 (2) and TiCl4 in diethyl ether in moderate yields (60-63%). These complexes could be identified by 1H and 13C NMR, mass spectroscopy, and elemental analysis. It turned out that these complexes exhibited high catalytic activities for ethylene homopolymerization and for ethylene/1-hexene copolymerization in the presence of methylaluminoxane (MAO), methyl isobutyl aluminoxane (MMAO), or AliBu3- or AlEt3-Ph3CB(C6F5)4 as a cocatalyst. The effect of cocatalyst as well as solvent is very important for high activity, and it turned out that the catalytic activities performed in heptane (cocat. MMAO) were higher than those carried out in toluene (cocat. MAO). The catalytic ethylene/1-butene copolymerizations by the 3b-MMAO, (TBP)TiCl2-MAO [TBP = 2,2′-thiobis(4-methyl-6-tert-butylphenolato)], or [Me2Si(C5Me4)(NtBu)]TiCl 2-AliBu3/Ph3CB(C6F 5)4 catalyst system were also explored under the various conditions, and it was found that the 1-butene contents and the triad sequence distributions of the resultant copolymer were highly dependent upon the catalyst used.

本文言語English
ページ(範囲)8009-8015
ページ数7
ジャーナルMacromolecules
31
23
DOI
出版ステータスPublished - 1998 11 17
外部発表はい

ASJC Scopus subject areas

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

フィンガープリント

「Ethylene homopolymerization and ethylene/1-butene copolymerization catalyzed by a [1,8-C<sub>10</sub>H<sub>6</sub>(NR)<sub>2</sub>]TiCl<sub>2</sub>-cocatalyst system」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。

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