Process for producing polypropylene

Details Process for producing polypropylene Process for producing polypropylene

C - Chemistry, Metallurgy

08

F

402/645

C08F 110/06 (2006.01) C08F 4/64 (2006.01)

Patent

CA 1073149

PROCESS FOR PRODUCING POLYPROPYLENE ABSTRACT OF THE DISCLOSURE: In a process for the polymerization of propylene, a polymer having improved mechanical properties can be obtained in high yields without forming a noticeable amount of an amorphous polymer as a by-product by using a catalyst system comprising (a) a fine granular form of titanium trichloride, (b) an organoaluminum compound, and (c) an organic phosphite having a formula: P(OR)nX3-2 wherein R denotes a hydrocarbon radical having 1 - 30 carbon atoms, X a halogen atom, and n a number 1 - 3, the titanium being a purple finely granulated solid obtained by precipitation from a homogeneous liquid mixture or solution of titanium trichloride and an ether in the presence of a Lewis acid.

269320

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