The synthesis and polymerization behavior of bimetallic pyridine diamide complexes containing transition metal (Ti, Zr)

被引：0

作者：

Kang, KK ^{[1
]}

Hong, SP

Jeong, YT

Shiono, T

Ikeda, T

机构：

[1] Korea Petrochem Ind Co, Ctr Res & Dev, Ulsan 680110, South Korea

[2] Pusan Natl Univ, Dept Chem, Pusan 609735, South Korea

[3] Tokyo Inst Technol, Resources Utilizat Res Lab, Yokohama, Kanagawa 226, Japan

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1999年 / 37卷 / 20期

关键词：

pyridine diamide; bimetallic complex; synthesis; polymerization;

D O I：

10.1002/(SICI)1099-0518(19991015)37:20<3756::AID-POLA3>3.0.CO;2-D

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Titanium and zirconium complexes with a pyridine diamide ligand, [2,6-(RNCH2)(2)NC5H3](2-) (PDMP; R = 2,6-dimethylphenyl) have been synthesized and their catalytic behaviors investigated for ethylene polymerization. It was found that the zirconium complexes, [PDMP]ZrCl2 (7) and [PDMP][ZrCl3 x THF](2) (8), gave higher activities than the titanium complexes, [PDMP]TiCl2 (5) and [PDMP][TiCl3](2) (6). The bimetallic complexes (6, 8) gave higher activities than the corresponding monometallic complexes (5, 7). The titanium complexes gave polymers with higher molecular weight (M-w) than the zirconium complexes. The molecular weight distribution (M-w/M-n) of the polymers obtained from the pyridine diamide complexes were much broader than that of the normal metallocene catalysts. (C) 1999 John Wiley & Sons, Inc.

引用

页码：3756 / 3762

页数：7

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