Effect of Cocatalyst in Ethylene/Styrene Copolymerization by Aryloxo-Modified Half-Titanocene-Cocatalyst Systems for Exclusive Synthesis of Copolymers at High Styrene Concentrations

被引：12

作者：

Nomura, Kotohiro ^{[1
]}

Suzuki, Naohiro ^{[1
]}

Kim, Dong-Hyun ^{[2
]}

Kim, Hyun Joon ^{[2
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Chem, Hachioji, Tokyo 1920397, Japan

[2] Korea Inst Ind Technol, Cheonan Si 331825, Chungnam, South Korea

来源：

MACROMOLECULAR REACTION ENGINEERING | 2012年 / 6卷 / 08期

基金：

日本学术振兴会;

关键词：

copolymerization; ethylene; half-titanocenes; styrene; titanium; LIVING COPOLYMERIZATION; OLEFIN POLYMERIZATION; CATALYST SYSTEM; COMPLEXES;

D O I：

10.1002/mren.201200024

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Factors affecting the product distributions in ethylene/styrene copolymerizations catalyzed by Cp*TiCl2(O-2,6-iPr2C6H3) are explored in the presence of various cocatalysts at high styrene/ethylene feed ratios (at 40 and 55?degrees C). Ethylene/styrene copolymers were the sole product when the reactions were conducted in the presence of [PhN(H)Me2][B(C6F5)4] and AliBu3/Al(octyl)3 even at 55 and 70?degrees C, whereas syndiotactic polystyrene was by-produced when the polymerizations were performed at >40?degrees C in the presence of MAO; the ratios of the copolymer/SPS were affected by the reaction temperature as well as Al cocatalyst employed.

引用

页码：351 / 356

页数：6

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