Ethylene polymerization initiated by metallocene catalysts (C5H5)4Mt-MAO (Mt = Ti, Zr) in the presence of organometallic modifiers |
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| Authors: | I. V. Sedov P. E. Matkovskiy L. N. Russiyan V. P. Bozhok E. O. Perepelitsina |
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| Affiliation: | 1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia
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| Abstract: | The effect of various organometallic compounds (Me3Al, Et3Al, i-Bu 3Al, Et2Zn, Me4Sn, Et4Pb) on the activity and productivity of catalytic systems based on (C5H5)4Zr and (C5H5)4Ti and the molecular- mass characteristics of polymers is investigated. The effect of additives on the activity of catalysts; on the shape of kinetic curves of polymerization; and on the molec ular mass, molecular-mass distribution, and poly- dispersity of the resulting polymers is associated with reversible chain transfer to the organometallic compounds. |
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