COMPOSITION BASED ON PROPYLENE POLYMERS AND PROCESS FOR OBTAINING SAME

摘要

The present invention provides a composition, which includes: (a) from 55 to 74 parts by weight of a propylene polymer (A) which includes less than or equal to 1% by weight of ethylene and having a melt flow index (MFI) of 0.1 to 30 g/10 minutes, measured according to ASTM D 1238 (1986) under a load of 2.16 kg at 230EC; and (b) from 26 to 45 parts by weight of a polymer (B), which is a statistical copolymer of propylene including from 3.5 to 15 wt% of ethylene and having an MFI of 0.1 to 35 g/10 minutes. Another embodiment of the invention provides an article, which includes the above-described composition. Another embodiment of the invention provides a process for preparing the above-described composition, which includes two successive polymerization stages, wherein 55 to 74 parts by weight of polymer (A) and from 26 to 45 parts by weight of polymer (B) are respectively prepared.