Ethylene polymerization initiated by metallocene catalysts (C5H5)4Mt-MAO (Mt = Ti, Zr) in the presence of organometallic modifiers
- 1 February 2010
- journal article
- Published by Pleiades Publishing Ltd in Polymer Science Series B
- Vol. 52 (1-2) , 63-66
- https://doi.org/10.1134/s1560090410010094
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.Keywords
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