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Synthesis and evaluation of two new FI-Ti catalysts for living polymerization of ethylene

Authors

  • Song Guo,

    1. Department of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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  • Suyun Jie,

    1. Department of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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  • Hong Fan,

    Corresponding author
    1. Department of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    • Department of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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  • Jianxiu Weng,

    1. Department of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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  • Weifeng Liu,

    1. Department of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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  • Bo-Geng Li

    1. Department of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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Abstract

Two new FI complexes, bis[N-(3-allylsalicylidene)-pentafluoroanilinato]titanium(IV) dichloride (AFI) and bis[N-(3-propylsalicylidene)-pentafluoroanilinato]titanium(IV) dichloride (PFI) were designed and synthesized as catalysts for living polymerization of ethylene. The two complexes were characterized by elemental analysis, spectroscopy and X-ray single diffraction. The catalysts were evaluated in ethylene polymerization under atmospheric pressure. It was found that both catalysts exhibited high activity and good livingness. The effects of temperature and dMAO/Ti molar ratio on the polymerization behavior of AFI were studied in detail. Elevating temperature increased self-immobilization of the AFI catalyst, which broadened the polymer molecular weight distribution. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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