Syndiospecific polymerization of styrene in the presence of new titanium complexes with dialkanolamines: Titanocanes and bistitanocanes

被引：6

作者：

Vasilenko, I. V. ^{[1
]}

Kostjuk, S. V. ^{[1
]}

Zaitsev, K. V. ^{[2
]}

Nedorezova, P. M. ^{[3
]}

Lemenovskii, D. A. ^{[2
]}

Karlov, S. S. ^{[2
]}

机构：

[1] Belarusian State Univ, Inst Physicochem Problems, Minsk 220030, BELARUS

[2] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia

[3] Russian Acad Sci, NN Semenov Chem Phys Inst, Moscow 119991, Russia

来源：

POLYMER SCIENCE SERIES B | 2010年 / 52卷 / 3-4期

基金：

俄罗斯基础研究基金会;

关键词：

HIGHER ALPHA-OLEFINS; SYNDIOTACTIC POLYSTYRENE; LIVING POLYMERIZATION; STEREOSPECIFIC POLYMERIZATION; METALLOCENE CATALYSTS; ALUMINUM ALKYLS; METHYLALUMINOXANE; 1-HEXENE; ETHYLENE; COPOLYMERIZATION;

D O I：

10.1134/S1560090410030036

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The syndiospecific polymerization of styrene is studied in the presence of titanium complexes with dialkanolamines-bistitanocanes and titanocane-activated by individual MAO or the combined cocatalyst MAO/TIBA. It is shown that these catalysts are more active and stereospecific after their activation with the combined cocatalyst ([TIBA]: [MAO] a parts per thousand currency sign 0.13) than that in the case of the activation with MAO: The activities of the catalysts are a parts per thousand currency sign18 and 9 kg PS/(mol Ti h), and the syndiotacticities of PS are a parts per thousand currency sign76 and 60%, respectively. Polymers synthesized in the presence of bistitanocanes are characterized by M (n) a parts per thousand currency sign 4.5 x 10(4) and T (m) a parts per thousand currency sign 268A degrees C and a narrow molecular-mass distribution (a parts per thousand currency sign2.5).

引用

页码：136 / 143

页数：8

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