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Tacticity distribution of isotactic polypropylene prepared with heterogeneous Ziegler–Natta catalyst. 1. Fractionation of polypropylene[J] . Polymer . 2004 (9)
[2]
Effect of Et3Al and 9, 9-Bis (methoxymethyl)fluorine on Propylene Polymerization at High Temperature with TiCl4/MgCl2 Catalysts. Chifeng Zhong,MIngzhi Gao,Bingquan Mao. Macromolecular Chemistry and Physics . 2005