Catalyst components and catalysts for the polymerization of alpha-olefins
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United States of America Patent
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Aug 16, 1983
Issued Date -
N/A
app pub date -
Jan 21, 1981
filing date -
Aug 22, 1978
priority date (Note) -
Expired
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Abstract
Catalyst components which comprise the reaction product of a Ti compound and a Mg dihalide and which are in the form of spherical particles having an average diameter of 1 to 100 microns, a surface area of 300 to 500 m.sup.2 /g, and a porosity of 0.3 to 0.4 cc/g are disclosed, as are catalysts also in the form of spherical particles prepared therefrom and useful in the polymerization of ethylene and of alpha-olefins CH.sub.2 .dbd.CHR in which R is alkyl radical having from 1 to 6 carbon atoms, and the polymerization of the alpha-olefins therewith.
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