Synthesis of <i>ansa</i>-Fluorenylamidotitanium(tetrahydrofuran) Complex and Its Catalytic Ability for Polymerization of Olefins

  • NISHII Kei
    Department of Materials Chemistry and Bioengineering, National Institute of Technology, Oyama College
  • HAYANO Shigetaka
    Zeon Corporation R & D Center
  • TSUNOGAE Yasuo
    Zeon Corporation R & D Center
  • NAKAYAMA Yuushou
    Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University
  • SHIONO Takeshi
    Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University

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Other Title
  • フルオレニルアミドチタン(テトラヒドロフラン)錯体の合成とそのオレフィン重合触媒作用
  • フルオレニルアミドチタン(テトラヒドロフラン)サクタイ ノ ゴウセイ ト ソノ オレフィン ジュウゴウ ショクバイ サヨウ

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Abstract

SiMe21-C13H8)(η1-tBuN)TiMe2(thf) (1; C13H8 = fluorenyl, thf = tetrahydrofuran) was synthesized and characterized by 1H, 13C, DEPT NMR, and single crystal X-ray analysis. The catalyst system composed of the complex 1 and modified methylaluminoxane (MMAO) exhibits the characteristics of a quasi-living polymerization of 1-hexene in toluene at −30°C, producing a syndiotactic-rich polymer with a relatively narrow molecular weight distribution (Mw/Mn = 1.36). Moreover, this catalyst system is also capable of promoting the quasi-living copolymerization of 1-hexene with norbornene at room temperature, yielding random copolymers with narrow molecular weight distributions. The quasi-living nature of the catalyst allows the synthesis of syndiotactic-rich poly(1-hexene)-block-poly(1-hexene-ran-norbornene) diblock copolymers.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 75 (6), 564-569, 2018-11-25

    The Society of Polymer Science, Japan

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