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http://dx.doi.org/10.12989/amr.2017.6.3.303

Synthesis of ArOTiCl3 complexes and their application for ethylene polymerization and copolymerization  

Wang, Jianwei (School of Materical Science and Molecular Engineering, East China University of Science and Technology)
Ren, Yingchun (School of Chemistry and Molecular Engineering, East China University of Science and Technology)
Xu, Sheng (School of Materical Science and Molecular Engineering, East China University of Science and Technology)
Mi, Puke (School of Materical Science and Molecular Engineering, East China University of Science and Technology)
Publication Information
Advances in materials Research / v.6, no.3, 2017 , pp. 303-316 More about this Journal
Abstract
In this article, novel olefin polymerization catalyst with lower cost and simple synthetic process were developed, $ArOTiCl_3$ complexes [$(2-OMeC_6H_4O)TiCl_3(C1)$, $(2,4-Me_2C_6H_3O)TiCl_3(C2)$, $TiCl_3(1,4-OC_6H_4O)TiCl_3(C3)$, $TiCl_3(1,4-OC_6H_2O-Me_2-2,5)$ $TiCl_3(C4)$] and corresponding $(ArO)_2TiCl_2$ complexes [$TiCl_2(OC_6H_4-OMe-2)_2(C5)$ and $TiCl_2(OC_6H_3-Me_2-2,6)_2(C6)$] have been synthesized by the reaction of $TiCl_4$ with phenol, all these complexes were well characterized with $^1H$ NMR, $^{13}C$ NMR, MASS and EA. When combined with methylaluminoxane (MAO), the $ArOTiCl_3/MAO$ system shows high activity for ethylene copolymerization with 1-octene and copolymer was obtained with broaden molecular weight distribution (MWD). The $^{13}C$ NMR result of polymer indicates that the 1-octene incorporation in polymer reached up to 8.29 mol%. The effects of polymerization temperature, concentration of polymerization monomer and polymerization time on the catalytic activity have been investigated.
Keywords
$ArOTiCl_3$ complex; catalyst; ethylene/1-octene; copolymerization;
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