Patent ID: 8026312

Claim:
A polyolefin composition comprising, in percent by weight: A) 20-35% of a propylene homopolymer or a copolymer of propylene with at least one comonomer selected from ethylene and CH 2 ═CHR alpha-olefins where R is a 2-8 carbon alkyl, the copolymer comprising up to 8% of the comonomer, or a combination of the propylene homopolymer and the copolymer of propylene; B) 65-80% of a copolymer of ethylene and (i) propylene or (ii) CH 2 ═CHR alpha-olefins, where R is a 2-8 carbon alkyl radical, or (iii) a combination thereof, optionally with minor amounts of a diene, comprising from 40% to less than 54% of ethylene; wherein the weight ratio B/XS of the content B of copolymer component (B) to the fraction XS soluble in xylene at room temperature, both referred to the total weight of (A)+(B), is 1.25 or less, and the intrinsic viscosity [η] of the XS fraction is less than 3 dl/g.