Polypropylene capable of producing high-rigidity molded...

Details Polypropylene capable of producing high-rigidity molded... Polypropylene capable of producing high-rigidity molded...

C - Chemistry, Metallurgy

08

F

402/644

C08F 110/06 (2006.01) C08F 4/66 (1985.01)

Patent

CA 1193398

ABSTRACT OF THE DISCLOSURE A polypropylene capable of producing high- rigidity molded products and such products produced therefrom are provided, which polypropylene is obtained by polymerizing propylene in the presence of a catalyst prepared by reacting an organoaluminum compound or a reaction product of an organoaluminum compound with an electron donor, with TiC?4, further reacting the resulting solid product (II) with an electron donor and an electron acceptor, and then combining the resulting solid product (III) with an organoaluminum compound and an aromatic carboxylic acid ester (V), the molar ratio of (V) to (III) being 0.2 to 10.0, and the polypropylene having an isotactic pentad ratio P relative to MFR in the range of 1.00 ? P ? 0.015 log MFR + 0.955.

417917

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