Study on unsaturated structures of polyhexene, poly(4-methylpentene) and poly(3-methylpentene) prepared with metallocene catalysts

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• 作者：Nobuo Kawahara ; Junji Saito ; Shingo Matsuo ; Hideyuki Kaneko ; Tomoaki Matsugi ; Yoshihisa Toda ; Norio Kashiwa
• 关键词：Polymer chemistry ; Metallocene catalyst ; Unsaturated structures in polyolefins
• 刊名：Polymer
• 出版年：2007
• 出版时间：12 January 2007
• 年：2007
• 卷：48
• 期：2
• 页码：425-428
• 全文大小：180 K

文摘

Hex-1-ene (hexene), 4-methylpent-1-ene (4-MP-1) and 3-methylpent-1-ene (3-MP-1), homopolymerizations were conducted by using metallocenes, En(Ind)₂ZrCl₂ and iPr(Cp)(Flu)ZrCl₂, with methylaluminoxane. ¹H NMR analyses of the resulting polymers were carried out to identify the unsaturated structures of these polymers. In polyhexene and poly(4-MP-1), the detected main unsaturated structure was di-substituted vinylene. On the other hand, in poly(3-MP-1), vinylidene and tri-substituted vinylene structures were mainly observed for the first time.