Copolymerization of ethylene and propylene using silicon tetrachloride-modified silica/MAO with Et[Ind]2ZrCl2 metallocene catalyst

被引：0
|
作者：
Chao, CR
Pratchayawutthirat, W
Praserthdam, P [1 ]
Shiono, T
Rempel, GL
机构：
[1] Chulalongkorn Univ, Dept Chem Engn, Bangkok 10330, Thailand
[2] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[3] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2002年 / 23卷 / 12期
关键词：
copolymerization; metallocene catalysts; silicas; silicon tetrachloride; supports;
D O I：
10.1002/1521-3927(20020801)23:12<672::AID-MARC672>3.0.CO;2-I
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
For the copolymerization of ethylene with propylene or a higher a-olefin, using Et[Ind](2)ZrCl2 metallocene catalyst, modification of silica with silicon tetrachloride prior to MAO adsorption can increase the activity, which is more pronounced for ethylene/1-hexene copolymerization at higher pressure and temperature. The molecular weight of the copolymer produced was lower and the polydispersity tends to be decreased. No significant effect of SiCl4 addition on the microstructure and the
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页码：672 / 675
页数：4
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