Patent ID: 7700690

Claim:
Polyolefin compositions comprising (percent by weight): 1) 55-80% of a crystalline propylene homopolymer or copolymer containing up to 15% of at least one of ethylene and C 4 -C 10 α-olefin(s) and having a MFR value (230° C., 2.16 kg) of at least 15 g/10 min; and 2) 20-45% of a copolymer of ethylene with at least one of C 4 -C 10 α-olefin(s) containing from 10 to 40% of said C 4 -C 10 α-olefin(s); said compositions having MFR (230° C., 2.16 kg) values of at least 15 g/10 min, a total content of ethylene of 20% or more, a total content of C 4 -C 10 α-olefin(s) of 4.5% or more, a ratio of the total content of ethylene to the total content of C 4 -C 10 α-olefin(s) of 2.3 or more, and an intrinsic viscosity value of a fraction soluble in xylene at room temperature of at most 1.7 dl/g.