Method for preparing catalyst for olefin polymerization
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United States of America Patent
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Aug 31, 2004
Grant Date -
Apr 1, 2004
app pub date -
Jun 30, 2003
filing date -
Dec 29, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is a preparation method of titanium catalyst for olefin polymerization, the method comprising (1) preparing magnesium compound solution by resolving non-deoxidative magnesium halide and IIIA group atom compound in a solvent mixture of cyclic ether, at least one alcohol, phosphorus compound and organosilane with or without hydrocarbon solvent; (2) reacting said magnesium compound solution with titanium compound, silicon compound, tin compound or mixture thereof to produce a support; and (3) reacting said support with titanium compound and electron donor to produce solid complex titanium catalyst, wherein the particle size and particle size distribution f said catalyst are regulated by controlling solubility of the reactants in said steps (2) and/or (3).
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