| 摘要 |
<p>A process for producing an a-olefin polymer which comprises polymerizing an α-olefin in the presence of a catalyst system comprising
<UnorderedLists id="ula01" listStyle="none"><ListItem>(A) a solid catalyst component obtained by steps of
<UnorderedLists id="ula02" listStyle="none"><ListItem>i) reducing titanium tetrachloride with an organoaluminum compound represented by the general formula R<Sup>1</Sup>nAlY<Sub>3-n</Sub>, wherein R' represents a C<Sub>1</Sub>-C<Sub>18</Sub> hydrocarbon group, Y represents a halogen, and n represents a number satisfying 1<n<3,</ListItem><ListItem>ii) heating the reduction product at a temperature of up to 150°C,</ListItem><ListItem>iii) treating the thus obtained solid product containing y-titanium trichloride by preliminary polymerization of an α-olefin in the presence thereof, and</ListItem><ListItem>iv) reacting the resulting solid product with a halogen represented by the general formula X<Sub>2</Sub>, wherein X represents Cl, Br, or I, and/or an interhalogen compound represented by the general formula X'X"a, wherein X' and X" represent each Cl, Br, or I and a represents 1 or 3, and with an ether compound represented by the general formula R<Sup>2</Sup>-O-R<Sup>3</Sup>, wherein R<Sup>2</Sup> and R' are the same or different and represent each a C<Sub>1</Sub>-C<Sub>10</Sub> alkyl group, in a hydrocarbon solvent at a temperature of 50° to 100°C, and</ListItem></UnorderedLists></ListItem><ListItem>(B) an organoaluminum compound.</ListItem></UnorderedLists></p> |
