MgCl2-supported TiCl4 catalysts containing diethyl norbornene-2,3-dicarboxylate internal electron donor for 1-butene polymerization: Effects of internal electron donor configuration

Three isomeric 5-norbornene-2,3-dicarboxylic acid diethyl ester (NDDE) with endo-, exo-, and trans-configuration have been synthesized and employed as internal electron donors (IED) in 1-butene polymerization over magnesium chloride supported Ziegler-Natta catalysts. It was found that the configurat...

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Bibliographic Details
Published in:Journal of applied polymer science 2014-09, Vol.131 (18), p.9192-n/a
Main Authors: Dong, Xiaofang, Zhang, Li, Liu, Zhibo, Yang, Min, Duan, Zhongyu, Hou, Kaihu, Liu, Binyuan, Kim, IL
Format: Article
Language:English
Subjects:
Applied sciences
Catalysts
Configurations
Dicarboxylic acids
Exact sciences and technology
Magnesium chloride
Materials science
Organic polymers
Physicochemistry of polymers
Polydispersity
Polymerization
Polymers
polyolefins
Preparation, kinetics, thermodynamics, mechanism and catalysts
Ziegler-Natta catalysts
Ziegler-Natta polymerization
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Summary:Three isomeric 5-norbornene-2,3-dicarboxylic acid diethyl ester (NDDE) with endo-, exo-, and trans-configuration have been synthesized and employed as internal electron donors (IED) in 1-butene polymerization over magnesium chloride supported Ziegler-Natta catalysts. It was found that the configuration of NDDE plays a key role in tuning the catalyst activity, stereospecificity, molecular weight (MW), and polydispersity index (PDI) of resulting poly(1-butene). The type of catalyst with cis-5-norbornene-endo-2,3-dicarboxylic acid diethyl ester as IED shows the highest catalyst activity, while catalyst with trans-NDDE as IED yields the poly(1-butene) with the highest MW and the most broad PDI. IR results showed that the NDDE with endo-, exo-, and trans-configuration have different coordination way to MgCl2, subsequently affecting the catalysts performance. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40758.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.40758