Ethylene Polymerization by Phenyl Sulfide Bridged Dinuclear Titanocene Complex/MAO

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 181-182)

Edited by:

Qi Luo and Yuanzhi Wang

Pages:

804-808

DOI:

10.4028/www.scientific.net/AMR.181-182.804

Citation:

Y. J. Nie and M. Yang, "Ethylene Polymerization by Phenyl Sulfide Bridged Dinuclear Titanocene Complex/MAO", Advanced Materials Research, Vols. 181-182, pp. 804-808, 2011

Online since:

January 2011

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$35.00

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