Spheric catalyst component for olefin polymerization and catalyst comprising the same
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United States of America Patent
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Issued Date -
Jan 5, 2006
app pub date -
Jul 1, 2005
filing date -
Jul 5, 2004
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Abstract
The present invention provides a spheric catalyst component as well as a catalyst for olefin polymerization. The spheric catalyst component comprises at least one titanium compound and optionally at least one electron donor compound supported on an active magnesium halide spheric carrier, wherein the active magnesium halide spheric carrier is solid particles obtained by dispersing a melt of magnesium halide/alcohol adduct by rotation under high-gravity field. The catalyst has good particle morphology and narrow particle size distribution, and when used in olefin polymerization, especially in propylene polymerization, exhibits relatively high activity and stereoelectivity, and gives polymers having good particle morphology and high bulk density.
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