Patent ID: 8080616

Claim:
Polyolefin composition comprising, in percent by weight: A) 50-75% of a blend of polymers (PP) and (EC I ), wherein (PP) is selected from the group consisting of: (i) propylene homopolymers; (ii) copolymers of propylene with one or more comonomer(s) selected from ethylene and CH 2 ═CHR alpha-olefins where R is a 2-8 carbon alkyl, which copolymers contain from 1 to 8% of comonomer(s); (iii) combinations of said homopolymers (i) and copolymers (ii); (EC I ) is a copolymer of ethylene and propylene or CH 2 ═CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical, or a copolymer of ethylene, propylene and the said CH 2 ═CHR alpha-olefin(s), optionally with minor amounts of a diene, said copolymer (EC I ) containing from 20 to 35% of ethylene; and B) 25-50% of a copolymer (EC II ) of ethylene and propylene, optionally with minor amounts of a diene, said copolymer (EC II ) containing from 40 to 60% of ethylene; in which composition the copolymer component (EC I ) is present in amounts from 23 to 45% with respect to the total weight of (A), and the intrinsic viscosity [η tot ] of the fraction XS soluble in xylene at room temperature, referred to the total weight of (A)+(B), is of 3.5 dl/g or more.