Alternating copolymerization of ethylene and 1-octene with meso-[dimethylsilylbis(2-methyl-1-indeny)]zirconium dichloride-methylaluminoxane as catalyst system
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Uozumi, T
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JAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPANJAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPAN
Uozumi, T
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Miyazawa, K
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JAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPANJAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPAN
Miyazawa, K
[1
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Sano, T
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JAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPANJAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPAN
Sano, T
[1
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Soga, K
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JAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPANJAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPAN
Soga, K
[1
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[1] JAPAN ADV INST SCI & TECHNOL,SCH MAT SCI,TATSUNOKUCHI,ISHIKAWA 92312,JAPAN
Copolymerizations of ethylene and a-olefins with homogeneous metallocene catalysts generally give the corresponding random copolymers with narrow molecular mass distributions. In this study, we have conducted the copolymerization sf ethylene and 1-octene with the meso-Me2Si(2-Me-1-Ind)(2)ZrCl2-methylaluminoxane (MAO) catalyst system, and analyzed the microstructure of the resulting copolymers in detail. The content of the alternating [EO] sequence increases markedly with an increase in the feed ratio of 1-octene to ethylene, reaching over 95% under appropriate copolymerization conditions. We have thus succeeded in preparing the first sample of alternating olefin copolymers.