Ziegler-Natta catalyst with in situ-generated donor
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United States of America Patent
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Issued Date -
Sep 13, 2007
app pub date -
Mar 10, 2006
filing date -
Mar 10, 2006
priority date (Note) -
Abandoned
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Abstract
In one aspect, the invention relates to a method for producing a polymerization catalyst, the method comprising: (a) providing a catalyst support material comprising a magnesium component bound or complexed to a metal oxide component, the magnesium component being either a magnesium(Y) component wherein Y is an alkoxide group or amido group, or an alcohol-adducted magnesium halide component; (b) reacting the magnesium component with one or more silane halide compounds to provide a modified catalyst support material containing in situ-generated alkoxysilane or amidosilane electron donor compounds; (c) combining the modified catalyst support material with one or more catalytically active transition metal compounds to provide a catalyst precursor; and d) combining the catalyst precursor with one or more catalytically active main group metal compounds. In another aspect, the invention relates to a method for polymerizing one or a combination of olefins by contacting the one or combination of olefins with the above polymerization catalyst under polymerization conditions.
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