PROCESS FOR THE PREPARATION OF HIGH FLUIDITY PROPYLENE POLYMERS

摘要

Process for the production of propylene polymers having a Melt Flow rate (230°C, 2.16 Kg) higher than 30 g/10' and preferably higher than 50 g/10' and also characterized by having broad molecular weight distribution (MWD) carried out in the presence of a catalyst system comprising (a) a solid catalyst component containing Mg, Ti, halogen and an electron donor compound selected from succinates; (b) an alkylaluminum cocatalyst; and (c) a silicon compound of formula R1Si(OR)3 in which R1 is a branched alkyl and R is, independently, a C1-C10 alkyl.