Novel MgCl2-supported catalyst containing diol dibenzoate donor for propylene polymerization

A novel MgCl2-supported Ziegler-Natta catalyst containing 2-isoamyl-2-isopropyl-1,3-propandiol dibenzoate donor for propylene polymerization was studied, and compared with catalysts with different internal donors, such as benzoate, phthalate and diether, in polymerization dynamic behavior, activity,...

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Bibliographic Details
Published in:Polymer (Guilford) 2004-03, Vol.45 (7), p.2175-2180
Main Authors: Gao, Mingzhi, Liu, Haitao, Wang, Jun, Li, Changxiu, Ma, Jing, Wei, Genshuan
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:A novel MgCl2-supported Ziegler-Natta catalyst containing 2-isoamyl-2-isopropyl-1,3-propandiol dibenzoate donor for propylene polymerization was studied, and compared with catalysts with different internal donors, such as benzoate, phthalate and diether, in polymerization dynamic behavior, activity, hydrogen response and stereospecificity. It was found that there are two highly isospecific active sites in the catalyst with dibenzoate internal donor system and the effections of temperature are different on the performances of the two highly isospecific sites.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2004.01.036