| abstract |
A process for the production of a catalyst component for use in the polymerization of alpha -olefins, which comprises reducing titanium tetrachloride with an organo aluminum compound having the general formula Al Rn X3-n wherein R represents a hydrocarbon group having 1 to 18 carbon atoms, x represents a halogen atom and n represents a suitable numeral between o<n</=3, to thus obtain a reduced solid, then removing aluminum compounds contained in said reduced solid and activating with a mixture or a complex of titanium tetrachloride and a dialkyl ether of the general formula R'OR'' wherein R' and R'' are (a) alkyl groups having 1-4 carbon atoms, (b) normal alkyl groups having five carbon atoms, or (c) alkyl groups having 6-20 carbon atoms. |