Ziegler-Natta catalysts with novel internal electron donors for propylene polymerization

被引：15
|
作者：
Dang, Xiaofei [1 ,2 ]
Li, Qian [1 ]
Li, Huayi [1 ]
Yang, Yuan [1 ]
Zhang, Liaoyun [2 ]
Hu, Youliang [1 ]
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
JOURNAL OF POLYMER RESEARCH | 2014年 / 21卷 / 12期
关键词：
Internal donor; Polypropylene; Ziegler-Natta; External donor; SEQUENCE LENGTH DISTRIBUTION; EXTERNAL DONORS; MOLECULAR-WEIGHT; POLYPROPYLENE; ALKOXYSILANES;
D O I：
10.1007/s10965-014-0619-9
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Four new diester compounds were prepared and used as internal donors (ID) to prepare MgCl2 supported titanium catalysts. Different diesters had notable influences on the porosity and the specific surface areas of the catalysts. The propylene polymerizations results showed that isopropyl groups(ID-2), cyclopentyl(ID-4) were more suitable substituents for diester compounds to replace phenyl(DIBP). The effects of different external donor (ED), Si/Ti ratio and hydrogen response on new ID precatalysts were evaluated by propylene polymerization.
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页数：8
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