| abstract |
The present invention provides a method for producing a high MFR polypropylene having excellent product quality with high productivity. In a method for producing polypropylene by a vapor phase process in which heat of reaction is mainly removed by heat of vaporization of liquefied propylene, a solid obtained by contact-treating the following components (A1), (A2), and (A3): A method for producing polypropylene, comprising using the catalyst component (A). Component (A1): Solid component containing titanium, magnesium and halogen as essential components Component (A2): Vinylsilane compound component (A3): Organosilicon compound having an alkoxy group and / or compound having at least two ether bonds [Selection figure] None |