Catalyst for the polymerization of olefins

Details Catalyst for the polymerization of olefins Catalyst for the polymerization of olefins

C - Chemistry, Metallurgy

08

F

C08F 4/642 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2073723

CATALYST FOR THE POLYMERIZATION OF OLEFINS. ABSTRACT A supported solid component of catalyst, for the stereospecific polymerization of propylene and other .alpha.-olefins, is obtained by making a non-activated silica interact in succession with: (i) a magnesium dialkyl or halide of magnesium alkyl; (ii) a halogenating agent selected from silicon, tin and antimony halides; (iii) a titanium tetrahalide; and (iv) a Lewis base. A catalyst for the stereospecific polymerization of propylene and other .alpha.-olefins is composed of: ( A) the solid component of catalyst; (B) an aluminium trialkyl or aluminium alkyl halide; and (C) an electron donor compound, capable of forming a complex compound with component (B).

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