Procatalyst composition having alkoxy propyl ester internal electron donors and polymers derived therefrom

摘要

polymer composition and the catalyst is generated from them, that is, the propylene-based polymer is disclosed herein. The catalyst composition comprises an internal electron donor with an alkoxy-propyl ester. The catalyst composition to improve the catalyst selectivity. Propylene-based polymers produced from the catalyst composition has a melt flow rate higher than 4g / 10 min.