Components and catalysts for the polymerization of ethylene
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United States of America Patent
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Mar 19, 1996
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N/A
app pub date -
Jan 13, 1994
filing date -
Jan 13, 1993
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Abstract
Solid catalyst component for the polymerization of ethylene including the product of the reaction between: 1) the product obtained by reacting: 1A) a halide, halogen alcoholate or alcoholate of titanium, vanadium or zirconium; 1B) a small quantity of water, and optionally 1C) a compound or composition capable of substituting, in compound 1A, one or more alkoxy groups with a halogen atom; and 2) a complex having general formula: MgX.sub.2 .multidot.nAlRX.sub.2 .multidot.pAlX.sub.3 where X is chlorine or bromine; R is a hydrocarbon radical containing from 1 to 20 carbon atoms; n is a number from 1 to 4; p is a number from 0 to 1, and n+p from 1 to 4; the catalyst component being in the form or particles having a diameter lower than or equal to 20 micrometers, and an average diameter lower than or equal to 10 micrometers.
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