| 摘要 |
<p>This invention comprises a catalytic component for polymerizing olefins comprising a solid support containing magnesium-halogen bonds, a transition metal halide of a metal selected from Groups IVB and VB of the periodic table, and an electron donor obtained by the steps comprising:
<UnorderedLists id="ula01" listStyle="none"><ListItem>(a) reacting an organometallic compound whose metal comprise members of Groups I to III of the periodic table with an alcohol, ROH, where R is an alkyl, cycloalkyl, or arylalkyl moiety having 1 to 16 carbon atoms, a polysiloxane, and a transition metal halide to form a solid;</ListItem><ListItem>(b) treating the solid with a transition metal halide optionally int he presence of a polysiloxane to form a treated solid; and</ListItem><ListItem>(c) reacting the treated solid with an electron donor and a transition metal halide to form the component.</ListItem></UnorderedLists></p> |
