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

• Published in: Journal of applied polymer science Vol. 131; no. 18; pp. 9192 - n/a
• Main Authors: Dong, Xiaofang, Zhang, Li, Liu, Zhibo, Yang, Min, Duan, Zhongyu, Hou, Kaihu, Liu, Binyuan, Kim, IL
• Format: Journal Article
• Language: English
• Published: Hoboken, NJ Blackwell Publishing Ltd 15.09.2014; Wiley; Wiley Subscription Services, Inc
• 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; Structure effect; Ziegler Natta catalyst; Ziegler-Natta polymerization; Butylene polymer; Magnesium Chlorides; Complex catalyst polymerization; Experimental study; Supported catalyst; Titanium IV Chlorides; polyolefins; catalysts; Olefin polymer; Stereospecificity; Stereospecific polymerization; Catalyst activity; Electron donor
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.40758

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.