Patent ID: 7872074

Claim:
A polyolefin composition comprising (percentages based on the sum of component (A) to (C)): (A) from 50 to 80 wt % of a propylene polymer comprising a polydispersity index value ranging from 4.5 to 10 and a content of isotactic pentads, measured by 13 C-NMR on a fraction insoluble in xylene at 25° C., higher than 97.5 mol %, said polymer being selected from propylene homopolymers or copolymers of propylene with at least one linear or branched alpha-olefin comprising from 2 to 8 carbon atoms other than propylene, said copolymer containing at least 95 wt % (based on the copolymer) of units derived from propylene; (B) from 5 to 20 wt % of a first copolymer of ethylene with at least one linear or branched alpha-olefin having 3 to 8 carbon atoms, said first copolymer of ethylene containing from 25 to less than 40 wt % (with respect to the component (B)) of units derived from ethylene and having a solubility in xylene at 25° C. ranging from more than 85 to 95 wt %; and (C) from 10 to 40 wt % of a second copolymer of ethylene with at least one linear or branched alpha-olefin having 3 to 8 carbon atoms, said second copolymer containing from 50 up to 75 wt % (with respect to the component (C)) of units derived from ethylene, having a solubility in xylene at 25° C. ranging from 50 to 85 wt % and an intrinsic viscosity of a fraction soluble in xylene lower than 1.8 dl/g.