| 摘要 |
<p>A process for producing a solid titanium trichloride catalyst which comprises at a temperature of -40 DEG C. to 40 DEG C. mixing titanium tetrachloride with an organo-aluminum compound of the formula (I): AlRnX3-n (I) wherein R has up to 10 carbon atoms and is an aliphatic hydrocarbon group which may be straight chain, branched chain or cyclic, or an aromatic hydrocarbon group; X is a halogen atom or a hydrogen atom; and n is a number satisfying the relation, 1.5</=n</=3; in the presence of an ether compound of the formula (II): R2OR3 (II) wherein R2 and R3, which may be the same or different, each is an alkyl group, an aralkyl group or an alkenyl group, each having up to 10 carbon atoms, to reduce the titanium tetrachloride; maintaining the mixed solution at a temperature of 10 DEG C. to 50 DEG C. thereby performing the reduction; at the time when the reduction reaction proceeds at least 90%, adding iodine to the resulting liquid titanium trichloride product; maintaining the resulting mixture at a temperature of about 30 DEG C. to about 150 DEG C. after the addition thereby precipitating solid titanium trichloride; and then separating the solid titanium trichloride.</p> |
