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A series of new complexes {2,6-bis[1-((2-methyl-4-methoxyphenyl)imino)ethyl]pyri-dine}MCI2 [M=Fe(Ⅱ) (2), Co(Ⅱ) (3), Ni(Ⅱ) (4), Cu(Ⅱ) (5), Zn(Ⅱ) (6)] have been synthesized. At 25℃, using 500 equiv of methylaluminoxane (MAO), the activities of Fe(Ⅱ), Co(Ⅱ) catalysts can reach 4.02×106 g/mol-Fehatm for ethylene polymerization and 3.98×105 g/mol-Cohatm for ethylene oligomerization. The effects of polymerization conditions such as reaction temperature, Al/M molar ratio and time on the activity of catalyst have been explored.
A series of new complexes {2,6-bis [1 - (2-methyl-4-methoxyphenyl) imino) ethyl] pyri-dine} MCI2 [M = Fe At 25 ℃, using 500 equiv of methylaluminoxane (MAO), the activities of Fe (Ⅱ) (5), Zn (Ⅱ) , Co (Ⅱ) can reach 4.02 × 106 g / mol-Fehatm for ethylene polymerization and 3.98 × 105 g / mol-Cohatm for ethylene oligomerization. The effects of polymerization conditions such as reaction temperature, Al / M molar ratio and time on the activity of catalyst have been explored.