CATALYST COMPONENT FOR ETHYLENE POLYMERIZATION, PREPARATION THEREOF AND CATALYST COMPRISING THE SAME
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United States of America Patent
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app pub date -
Feb 2, 2015
filing date -
Oct 31, 2005
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Abandoned
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Abstract
The present invention relates to a catalyst component for ethylene polymerization, which comprises a reaction product of a magnesium complex, at least one titanium compound, at least one alcohol compound, at least one silicon compound, and optionally an organic aluminum compound. The silicon compound is an organic silicon compound having a general formula R1xR2ySi(OR3)2, in which R1 and R2 are independently a hydrocarbyl or a halogen, R3 is a hydrocarbyl, 0≦x≦2, 0≦y≦2, 0≦z≦4, and x+y+z=4. The present invention further relates to a method for the preparation of the catalyst component and to a catalyst comprising the same. The catalysts according to the invention have virtues such as high catalytic activity, good hydrogen response, and narrow particle size distribution of polymer, and are especially suitable for a slurry process of ethylene polymerization and a combined process of ethylene polymerization, which requires a high activity of catalyst.
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