| A New Type of Polymer-Supported Metallocene Catalyst for Ethylene Polymerization |
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| 作者姓名： | Guang Qian YU* De Ze ZHANG Fu SHUN Li Jun QIAO Tao TANG Bao Tong HUANG State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Polymer Chemistry Laboratory Chemistry Academy of S |
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| 作者单位： | Guang Qian YU*，De Ze ZHANG，Fu SHUN，Li Jun QIAO，Tao TANG，Bao Tong HUANG State Key Laboratory of Polymer Physics and Chemistry，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences; Polymer Chemistry Laboratory，Chemistry Academy of S |
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| 摘 要： | Although homogeneous metallocene catalysts show some specific characteristics, such as single site, extremely high catalytic activity, high ability to incorporate monomers, narrow molecular weight and comonomer distribution, and excellent control of stereoregularity, but they also suffer some drawbacks, a very large amount of MAO requirement, inability to be used in slurry or gas phase processes, and poor control of polymer morphology. Therefore, it is necessary to modify the catalysts for the…
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A New Type of Polymer-Supported Metallocene Catalyst for Ethylene Polymerization |
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| Guang Qian YU*,De Ze ZHANG,Fu SHUN,Li Jun QIAO,Tao TANG,Bao Tong HUANG State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Polymer Chemistry Laboratory,Chemistry Academy of S.A New Type of Polymer-Supported Metallocene Catalyst for Ethylene Polymerization[J].Chinese Chemical Letters,2001(3). |
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| Authors: | Guang Qian YU De Ze ZHANG Fu SHUN Li Jun QIAO Tao TANG Bao Tong HUANG State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Polymer Chemistry Laboratory Chemistry Academy of S |
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| Institution: | Guang Qian YU*,De Ze ZHANG,Fu SHUN,Li Jun QIAO,Tao TANG,Bao Tong HUANG State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Polymer Chemistry Laboratory,Chemistry Academy of S |
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| Abstract: | A new polymer-supported metallocene catalyst has been prepared. The polymer- supported metallocene displayed considerably high activity in ethylene polymerization, the highest being 3.62(107gPE/molZr(h, the molecular weight of the polyethylene produced was Mn = 1.29(105, about 3-4 times those of corresponding homogeneous zirconocenes. The polymer- supported metallocene keeps the characteristics of homogeneous metallocene catalysts, and offers some features,such as adaptable to gas phase and slurry processes; easy to prepare in low cost; relatively high activity and lower MAO/Zr ratio; lower inorganic residues in the polyolefins as compared to cases of SiO2, Al2O3 or MgCl2; unitary active structure, no complex surface as with SiO2; good control of morphology of the resulting polymer. |
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| Keywords: | Polymer-support metallocene catalyst ethylene polymerization |
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