Non-metallocene catalysts for the styrene polymerization:: isospecific group 4 metal bis(phenolate) catalysts

被引：45

作者：

Capacchione, C

Proto, A

Ebeling, H

Mülhaupt, R

Möller, K

Manivannan, R

Spaniol, TP

Okuda, J

机构：

[1] Rhein Westfal TH Aachen, Inst Anorgan Chem, D-52056 Aachen, Germany

[2] Univ Salerno, Dipartimento Chim, I-84081 Baronissi, Italy

[3] Univ Freiburg, Freiburger Mat Forschungszentrum, D-79104 Freiburg, Germany

[4] Univ Freiburg, Inst Makromol Chem, D-79104 Freiburg, Germany

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2004年 / 213卷 / 01期

关键词：

styrene; non-metallocene catalyst; stereoselective polymerization; titanium; stereorigidity;

D O I：

10.1016/j.molcata.2003.10.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

dThe development of an isospecific styrene polymerization catalysts system based on methylaluminoxane (MAO)-activated group 4 metal non-metallocene complexes is reported. The ligand derived from the 1,4-dithiabutanediyl-linked bis(phenol)s has been designed in order to ensure stereochemical rigidity utilizing the potentially hemi-labile function of the sulfur donors. Isospecificity during styrene polymerization was achieved using easily accessible catalyst precursors of the type [MX2(OC6H2-'Bu-2-4, 6)(2) {S(CH2)(2)S}] (M = Ti, Zr, Hf; X = Cl, CH2Ph). A remarkable dependence of both the activity and stereoselectivity on the ligand backbone was observed, as analogous precursors with 1,5-dithiapentanediyl-linked bis(phenolato) ligand gave syndiotactic polystyrene with lower activity. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：137 / 140

页数：4

共 49 条

[1] ISOTACTIC POLYMERIZATION OF STYRENE AND VINYLCYCLOHEXANE IN THE PRESENCE OF A C-13-ENRICHED ZIEGLER-NATTA CATALYST - REGIOSELECTIVITY AND ENANTIOSELECTIVITY OF THE INSERTION INTO METAL METHYL BONDS [J].