| abstract |
A process for producing a magnesium containing support for titanium comprising contacting magnesium metal, a halogenated hydrocarbon and a compound represented by the formula X'mC(OR')4-m wherein X' is a hydrogen atom, a halogen atom or a C1-C10 alkyl, aryl, cycloalkyl or halogenated alkyl, aryl, cycloalkyl group, R' is a C1-C20 alkyl, aryl or cycloalkyl group and m is 0, 1 or 2 to form a magnesium-containing solid represented by the formula R'OMgX and thereafter contacting the magnesium-containing solid with a Lewis base or a compound which can form an ester such as benzoyl chloride and a titanium compound such as titanium tetrachloride. The obtained magnesium supported titanium composition is useful as a catalyst component in combination with a co-catalyst organoaluminum compound for the polymerization of olefins. |