トリアルコキシガドリニウム触媒系によるブタジエンの重合

DOI

書誌事項

タイトル別名
  • Polymerization of Butadiene with Trialkoxygadolinium Catalyst Systems.

抄録

Butadiene was polymerized with trialkoxygadolinium [Gd (OR) 3] -based Ziegler catalyst systems in hexane at 50°C. For example, the polymerization with Gd (neopentyl-O) 3-Et3Al-Et2AlCl was completed in 5 h to give the high cis polybutadiene (cis %=94-98%). The effects of steric hindrance of alkoxy ligands and preparation conditions of catalyst systems were investigated in detail. Gd (neopentyl-O) 3 exhibited higher activity than gadolinium catalysts with n-pentoxy and isopropoxy ligands. The molar ratio of [Cl] / [Gd] affected the polymerization activity: the maximum yield was attained at [Cl] / [Gd] =2, whereas the polymer yield was very low at [Cl] / [Gd] =0 or [Cl] / [Gd] ≥5. On the basis of these results, properties of active species were also discussed. Copolymerization with styrene was attempted to elucidate the polymerization mechanism. However, the insertion of styrene units into polybutadiene hardly occurred in all the catalyst systems employed here. The coordination constant of styrene was evaluated, assuming that styrene was coordinated strongly with the active species.

収録刊行物

  • 高分子論文集

    高分子論文集 49 (6), 535-540, 1992

    公益社団法人 高分子学会

キーワード

詳細情報 詳細情報について

  • CRID
    1390282681498379904
  • NII論文ID
    130004034817
  • DOI
    10.1295/koron.49.535
  • ISSN
    18815685
    03862186
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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