| 双催化剂体系乙烯二聚和共聚合的研究 |
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| 引用本文： | 谢光华,方义群.双催化剂体系乙烯二聚和共聚合的研究[J].石油化工,1994(8). |
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| 作者姓名： | 谢光华 方义群 |
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| 作者单位： | 中国科学院化学研究所 |
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| 摘 要： | 研究以Ｔｉ（ＯＢｕ）＿４／ＳｉＯ＿２－ＡｌＥｔ＿３乙烯二聚催化剂与ＴｉＣｌ＿４／ＬｌｇＣｌ＿２－ＡＩＥｔ＿３乙烯聚合催化剂组成的双催化剂体系，使乙烯二聚生成１－丁烯并与乙烯就地共聚生成ＬＬＤＰＥ的各种影响因素。提出了通过控制预二聚时间及两个催化剂投入量之比，使体系中１－丁烯浓度至少在１小时之内基本保持稳定，从而得到组成稳定的ＬＬＤＰＥ。
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| 关 键 词： | 乙烯二聚，乙烯共聚合，双催化剂体系，线性低密度聚乙烯 |
A Study of Ethylene Dimerization and Copolylnerization Using a Dual Catalyst System |
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| Xie Cuanghua and Fang Yiqun.A Study of Ethylene Dimerization and Copolylnerization Using a Dual Catalyst System[J].Petrochemical Technology,1994(8). |
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| Authors: | Xie Cuanghua and Fang Yiqun |
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| Abstract: | A process of ethylene dimerization and simultaneous in-situ copolymedzation of 1-butene with ethylene using a dual catalyst system consisting of a dimerizationcalystTi(oBu)_4/siO_2 and a copolymerization catalyst TiCl_4/MgCl_2 for producing branched polyethy-lene has been developed.The reaction conditions of dimerization and copolymerization wereinvestigated.It is found that by variation in the molar ratio of the two catalysts and thepre-run dimerization time,a basically stable concentration of l-butene in the systeim can bemaintained and, in consequence,a LLDPE with desirable and controllable branching can beobtained. |
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| Keywords: | ethylene dimerization ethylene copolymerization dual catalyst system LLDPE |
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