Self-immobilized catalysts for ethylene polymerization based on various phenoxyimine titanium halide complexes |
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| Authors: | N. I. Ivancheva D. V. Sanieva S. P. Fedorov I. V. Oleinik I. I. Oleinik G. A. Tolstikov S. S. Ivanchev |
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| Affiliation: | 1. G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Saint Petersburg Department, 14 prosp. Dobrolyubova, 197198, Saint Petersburg, Russian Federation
2. N. N. Vorozhtsov Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 prosp. Akad. Lavrent’eva, 630090, Novosibirsk, Russian Federation
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| Abstract: | The kinetic features of ethylene polymerization on ten methylalumoxane-activated self-immobilized bis(phenoxyimine) complexes of titanium chloride of various structure containing oxyallyl functional groups were studied. The catalytic activity of the systems was determined in the temperature range 20–60 °C under ethylene pressure 0.4 MPa. The positions and structures of the oxyallyl group and substituents in the phenoxy groups of the complexes substantially change the activity of the catalytic systems based on these complexes, the rate of the self-immobilization of the catalysts on the polymer, and molecular weights and molecular weight distributions of the obtained polyethylenes. |
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