Ziegler catalytic system

Details Ziegler catalytic system Ziegler catalytic system

C - Chemistry, Metallurgy

08

F

402/626, 252/52.

C08F 4/42 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1118747

ABSTRACT OF THE DISCLOSURE Ziegler catalytic system, particularly suitable for the poly- merization of .alpha.-olefins at low pressure, formed by the combination of an organo-metallic compound and a compound of a heavy metal supported on a carrier, said carrier being a crystalline active complex obtained by reacting metallic magnesium, gaseous hydrogen chloride and one or more al- hols in the liquid or a gaseous state at a temperature of from 60° to 300°C, the said active complex having a content of free alcoholic hydroxyl groups of from 1 to 25%, by weight, a chlorine content of from 15 to 70% by weight, a magnesium, content of from 5 to 35% by weight, a porosi- ty of from 0.1 to 1 cc/g, a surface area of from 1 to 200 m2/g, and exhibiting x-ray diffraction bands at d=13.1 .ANG. and d-?.5 .ANG..

312390

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