Treatment of transition metal compound

Details Treatment of transition metal compound Treatment of transition metal compound

1975-10-30

1978-08-22

Gantz, Delbert E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526119, 526139, 526351, 526906, B01J 3102

Patent

active

041087968

ABSTRACT:
A titanium trihalide is ground with an organic Lewis Base compound which contains at least one phosphorus atom, and optionally at least one nitrogen atom, and a titanium tetrahalide, the Lewis Base and the titanium tetrahalide being used in amounts of 5 to 75, preferably 5 to 50%, molar and 1 to 50, preferably 5 to 30% molar respectively relative to the titanium trihalide. The materials are conveniently milled together and the milled product can be used as a component of an olefine polymerization catalyst and when such catalysts are used to polymerize propylene a high activity is achieved together with satisfactory stereospecificity.

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