Synthesis of ArOTiCl 3 complexes and their application for ethylene polymerization and copolymerization

. In this article, novel olefin polymerization catalyst with lower cost and simple synthetic process were developed, ArOTiCl 3 complexes [(2-OMeC 6 H 4 O)TiCl 3 ( C1 ), (2,4-Me 2 C 6 H 3 O)TiCl 3 ( C2) , TiCl 3 (1,4-OC 6 H 4 O)TiCl 3 ( C3 ), TiCl 3 (1,4-OC 6 H 2 O-Me 2 -2,5) TiCl 3 ( C4 )] and corresponding (ArO) 2 TiCl 2 complexes [TiCl 2 (OC 6 H 4 -OMe-2) 2 ( C5 ) and TiCl 2 (OC 6 H 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 1 H 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.

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