Patent ID: 8455072

Claim:
A polyolefin composition comprising (percent by weight): 1) 10-60% of a copolymer of propylene and hexene-1 wherein said copolymer comprises from 0.2 to 10% of recurring units derived from hexene-1, having a Polydispersity Index of 3 to 10; 2) 10-85% of a propylene polymer selected from a propylene homopolymer and a polymer of propylene with 0.1-10% of an α-olefin selected from ethylene, a C 4 -C 10 a-olefin, hexene-1 excluded, and a mixture thereof, said propylene polymer being insoluble in xylene at ambient temperature in an amount over 85% and having a Polydispersity Index ranging from 4.5 to 12; and 3) 5-30% of a copolymer of ethylene with a C 3 -C 10 α-olefin and optionally a diene, having an ethylene content ranging from 15 to 60% and an intrinsic viscosity value of at least 1 dl/g wherein components 1) and 2) have a stereoregularity of isotactic type.