Polymerization catalyst and method
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United States of America Patent
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Apr 9, 1991
Grant Date -
N/A
app pub date -
Feb 27, 1984
filing date -
Feb 27, 1984
priority date (Note) -
Expired
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Abstract
A catalyst and method in which the catalyst is used in association with an aluminum cocatalyst in the polymerization and copolymerization of 1-olefins. The catalyst is prepared by reacting certain multifunctional organic silicon compounds (silanes) with silica, alumina or the like having surface hydroxyl groups, or a mixture thereof, in which the silicon compound reacts with these surface hydroxyl groups, followed by reacting the product of this with a halide or alkoxide of a Group IVB or VB transition metal such as titanium, vanadium, zirconium or mixtures of these and finally reacting this product with a Group IIA organometallic compound or compound such as magnesium and calcium. The Group IIA organometallic compound can also be added before these transition metal compounds.
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