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

共 55 条

[1] COPOLYMERIZATION OF STYRENE AND ETHYLENE WITH MONOCYCLOPENTADIENYLTITANIUM TRICHLORIDE METHYLALUMINOXANE CATALYST - CHARACTERIZATION OF THE PRODUCT [J].

AALTONEN, P ;

SEPPALA, J .

EUROPEAN POLYMER JOURNAL, 1994, 30 (06) :683-687

[2] Synthesis and characterization of norbornene-ethylene-styrene terpolymers with a substituted ansa-fluorenylamidodimethyltitanium-based catalyst [J].

Ban, Hoang The ;

Nishii, Kei ;

Tsunogae, Yasuo ;

Shiono, Takeshi .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2007, 45 (13) :2765-2773

[3] Constrained geometry complexes - Synthesis and applications [J].

Braunschweig, Holger ;

Breitling, Frank M. .

COORDINATION CHEMISTRY REVIEWS, 2006, 250 (21-22) :2691-2720

[4] How to synthesize a constrained geometry catalyst (CGC) - A survey [J].

Cano, Jesus ;

Kunz, Klaus .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2007, 692 (21) :4411-4423

[5]

Capacchione C., 2006, J POLYM SCI A, V44, P1908

[6]

Chen H, 1998, J APPL POLYM SCI, V70, P109, DOI 10.1002/(SICI)1097-4628(19981003)70:1<109::AID-APP11>3.0.CO

[7]

2-2

[8]

Cheung YW, 2000, J POLYM SCI POL PHYS, V38, P2976, DOI 10.1002/1099-0488(20001115)38:22<2976::AID-POLB130>3.0.CO

[9]

2-5

[10]

Chum PS, 2000, ADV MATER, V12, P1759, DOI 10.1002/1521-4095(200012)12:23<1759::AID-ADMA1759>3.0.CO

← 1 2 3 4 5 6 →