A New Family of High-Performance Ti Catalysts for Olefin Polymerization

被引：8

作者：

Sandaroos, Reza ^{[1
,2
]}

Damavandi, Saman ^{[1
,2
]}

Farhadipour, Abolghasem ^{[1
]}

机构：

[1] Ferdowsi Univ Mashhad, Fac Sci, Dept Chem, Mashhad, Iran

[2] Islamic Azad Univ Sarvestan, Dept Chem, Sarvestan, Iran

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2010年 / 211卷 / 21期

关键词：

catalysis; metallocene catalysts; polyethylene (PE); polymerization (general); polyolefins; IMINE CHELATE LIGANDS; TITANIUM COMPLEXES; ETHYLENE POLYMERIZATION; MGCL2-BASED ACTIVATORS; BIS(PHENOXY-IMINE) ZR; LIVING POLYMERIZATION; COPOLYMERIZATION; SYSTEMS; MAO; METALLOCENES;

D O I：

10.1002/macp.201000254

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 syntheses, structures and olefin polymerization behavior of Ti complexes containing a pair of chelating aminotropone [O-N] ligands are reported. DFT studies revealed that bis(aminotropone) Ti complexes, when activated, provide a metal alkyl in the cis position to a vacant coordination site for monomer binding, suggesting great potential for the polymerization of olefinic monomers. Unlike Ti-FI catalysts, bis(aminotropone) Ti complexes do not require the presence of steric bulk in close proximity to the anionic donor. Bis(aminotropone) Ti complexes combined with MAO display high ethylene polymerization activities (max. 27 200 kg polymer per mol catalyst and hour) comparable to those obtained with early group-four metallocene catalysts under identical conditions.

引用

页码：2339 / 2346

页数：8

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