New group IV metallocene systems active in the copolymerization of α-olefins and conjugated dienes

被引：11

作者：

Napoli, M ^{[1
]}

Pragliola, S ^{[1
]}

Costabile, C ^{[1
]}

Longo, P ^{[1
]}

机构：

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

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2006年 / 207卷 / 03期

关键词：

copolymerization; cyclopolymerization; metallocene catalyst; NMR; Ziegler-Natta polymerization;

D O I：

10.1002/macp.200500457

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Rac-[CH2(2,4-di-tert-butyl-cyclopentadienyl)(2)]-ZrCl2 (1), rac-[CH2(3-tert-butyl-4,5,6,7-tetrahydroindenyl)(2)]-ZrCl2(2) rac-[CH2(3-isopropyl-4,5,6,7-tetrahydroindenyl)(2)]-ZrCl2 (3), and rac-[CH,(3-methyl-4,5,6,7-tetrahydroindenyl)(2)]ZrCl2 (4) were synthesized and characterized by H-1 NMR analysis. These C-2 symmetric ansa-zirconocenes, activated with methylaluminoxane (MAO), were able to promote copolymerization of ethene and 1,3-butadiene. The structures of the copolymers are strongly influenced by zirconocene utilized as catalytic precursor. Depending on the reaction conditions polyethenes containing cyclopropane and cyclopentane rings, or 1,1- 1,3-butadiene inserted constitutional units, were obtained.

引用

页码：304 / 309

页数：6

共 16 条

[1]

ARNOLD M, 1991, MAKROMOL CHEM, V192, P1017

[2] The dual-site alternating cyclocopolymerization of 1,3-butadiene with ethylene [J].