abstract |
(57) [Summary] (Modified) [Objective] To provide a method for producing a propylene copolymer having an excellent balance of transparency and rigidity. [Structure] Using a polymerization catalyst comprising the following 1) to 3), A method for producing a propylene copolymer having an ethylene content of 0.01 to 10% by weight, which comprises copolymerizing propylene and ethylene. 1) a solid catalyst component containing metal oxide, magnesium, titanium, halogen and an electron-donating compound as an essential component, 2) an organoaluminum compound and 3) a compound represented by the formula: [Wherein R 1 and R 2 are the same or different hydrocarbon groups having 1 to 10 carbon atoms, OR 4 , OSiR 5 3 or SiR 6 3 , R 3 is a divalent hydrocarbon group having 1 to 10 carbon atoms, R 3 4 , R 5 and R 6 are each a hydrocarbon group having 1 to 10 carbon atoms. ] The organosilicon compound represented by these. |