Ziegler-Natta catalyst, preparation, and use for the polymerization of alkenes
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United States of America Patent
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Feb 12, 2008
Grant Date -
Mar 9, 2006
app pub date -
Sep 7, 2004
filing date -
Sep 7, 2004
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Abstract
A method for making a solid catalytic component for a Ziegler-Natta catalyst includes contacting a particulate porous support with a solution of a hydrocarbon soluble organomagnesium precursor compound in a hydrocarbon solvent; and reacting said hydrocarbon soluble organo-magnesium precursor compound with an amount of aliphatic or aromatic alcohol, said amount being within an acceptable range of a molar equivalent of aliphatic or aromatic alcohol calculated according to formula (I):.times..times..times..times..times..times..times..times..time-s..times..times..times..times..times..times..times..times..times..times..t-imes..times..times. ##EQU00001## wherein Equ.sub.Alkanol=molar equivalents of aliphatic or aromatic alkanol relative to the molar amount of magnesium-organic precursor, (mmole MgR/g support)=mmoles of magnesium-organic precursor per gram of particulate solid support, wt % (H.sub.2O)/support=weight percent of physically adsorbed water on the solid support, and said magnesium organic precursor compound being converted to a magnesium-oxygen compound.
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