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Ethylene Polymerization by Phenyl Sulfide Bridged Dinuclear Titanocene Complex/MAO

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Abstract:

The phenyl sulfide bridged metallocene complex [(C5H5)Cl2TiC5H4CH2(C6H4-p)]2S has been synthesized by treating the dilithium salts of the phenyl sulfide bridged cyclopentadienyl ligand with two equivalents of C5H5TiCl3 and characterized by 1HMNR and elemental analysis. After activation with methylaluminoxane (MAO), the complex was highly active catalysts for homogeneous ethylene polymerization in toluene. The influence of the molar ratio [MAO]/[Cat], the catalyst concentration, time and temperature have been studied systematically. The highest catalytic activity of 1 is up to 8.30×105 g PE/mol•Cat•h. Rising the polymerization temperature decreases the catalytic activity for 1. High temperature gel permeation chromatography (HT-GPC) proves the production of polyethylene with a broad molecular weight distribution (MWD), which is reached 10.11.

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Advanced Materials Science and Technology, ICMST 2010 View Preview

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Periodical:

Advanced Materials Research (Volumes 181-182)

Pages:

804-808

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.181-182.804

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Online since:

January 2011

Authors:

Yu Jing Nie, Ming Yang

Keywords:

Binuclear, Polyethylene (PE), Polymerization, Titanocene Catalyst

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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