Ethylene polymerization catalyzed by diamide complexes of Ti(IV) and Zr(IV)

被引：2
|
作者：
Carone, Carlos L. P. [1 ]
Fim, Fabiana C. [1 ]
Bisatto, Rubens [1 ]
Jahno, Vanusca D. [2 ]
Lemos, Cristovao [2 ]
Basso, Nara R. S. [2 ]
Einloft, Sandra [2 ]
Galland, Griselda Barrera [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil
[2] Pontificia Univ Catolica Rio Grande do Sul, LOR Fac Quim, BR-90619900 Porto Alegre, RS, Brazil
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2008年 / 110卷 / 01期
关键词：
catalysts; copolymerization; diamide complexes; polyethylene (PE); polyolefins;
D O I：
10.1002/app.28637
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this research, we describe the application of the complexes o-C6H4(NSiMe3)(2)ZrCl2 (1), o-C6H4(NSiMe3)(2)TiBr2 (2), o-C6H4(NSiMe3)(2)TiCl2 (3), C2H4(NSiMe3)(2)ZrCl2 (4), in the ethylene polymerization with different Al/M ratios and temperatures. These complexes presented significant catalytic activities in the presence of methyaluminoxane, (MAO) as cocatalyst and toluene as solvent, producing high molecular weight linear polyethylenes. Zirconium complexes were more active at 60 degrees C and titanium complexes at 40 degrees C. Zirconium complex (1) showed the best values of activity (347 kg PE/mol Zr h atm) for Al/Zr ratio of 340 and 60 degrees C of temperature. In ethylene-1-hexene copolymerization, the best result was also reached with catalyst 1, at the same conditions. (C) 2008 Wiley Periodicals, Inc.
引用
收藏
页码：270 / 275
页数：6
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