Synthesis of Low Isotactic Polypropylene Using MgCl₂/AlCl₃-supported Ziegler-Natta Catalysts Prepared Using the One-Pot Milling Method

Authors: Xiao, Anguo¹; Wang, Li²; Liu, Qingquan³; Yu, Haojie³; Dong, Xiaochen³

Source: Designed Monomers & Polymers, Volume 11, Number 2, 2008 , pp. 139-145(7)

Publisher: VSP, an imprint of Brill

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Abstract:

MgCl₂/AlCl₃-supported Ziegler-Natta catalysts were prepared using the one-pot milling method and low isotactic polypropylene was synthesized using this catalyst. The results indicated that higher Ti content in catalyst and higher polymerization temperature lead to higher isotactic index of resultant polypropylene. It was found that when Ti content was 1.2 wt% and the ratio of AlCl₃/MgCl₂ (mol/mol) was 0.1 in MgCl₂/AlCl₃-supported Ziegler-Natta catalyst, the activity of catalyst was highest at 30°C.

Keywords: MGCL2/ALCL3-SUPPORTED ZIEGLER-NATTA CATALYST; ISOTACTIC INDEX; POLYMERIZATION TEMPERATURE

Document Type: Regular paper

DOI: 10.1163/156855508X298044

Affiliations: 1: State Key Lab of Chemical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China, Department of Chemistry and Chemical Engineering, Hunan University of Art and Science, Changde 415000, P 2: State Key Lab of Chemical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China;, Email: opl_wl@dial.zju.edu.cn 3: State Key Lab of Chemical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China