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- W2381782175 abstract "Three β-hydroxyimino ligands:(2,6-iPr2C6H3)N-C(Ph)CH2CH(Ph)OH(1a),(2,6-iPr2C6H3)N-C(Ph)CH2C(Ph)2OH(1b),(2,6-iPr2C6H3)N-C(Ph)CH2C(C12H8)OH(1c) and their bis-ligated complexes: [(2,6-iPr2C6H3)N-C(Ph)CH2CH(Ph)O]2TiCl2(2a),[(2,6-iPr2C6H3)N-C·(Ph)CH2C(Ph)2O]2TiCl2(2b) and [(2,6-iPr2C6H3)N-C(Ph)CH2C(C12H8)O]2TiCl2(2c) were synthesized.The structures of the ligands and complexex were characterized by 1H NMR,MS and IR.In the presence of methylaluminoxane(MAO) as cocatalyst,the effects of experimental conditions in which Al/Ti molar ratio,time,temperature and pressure were varied on ethylene polymerization by catalyst 2b were investigated.These catalysts can produce polyethylene(PE) with very high molecular weight under the broad reaction conditions.The melt points of all PE samples are around 140 ℃.The results of ethylene polymerization by 2a—2c show that the bulky of substituents on the β-carbon influents on the catalytic activities very much.The catalyst 2b with two phenyl groups on the β-carbon gives the best catalytic activity among the three complexes." @default.
- W2381782175 created "2016-06-24" @default.
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- W2381782175 date "2012-01-01" @default.
- W2381782175 modified "2023-09-25" @default.
- W2381782175 title "Synthesis of Bis(β-hydroxyimino)titanium Complexes and Their Catalysis for Ethylene Polymerization" @default.
- W2381782175 hasPublicationYear "2012" @default.
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