Patent ID: 8748535

Claim:
A heterophasic polypropylene composition comprising (A) 40-70 wt % of a propylene homopolymer fraction, (B) 10-50 wt % of a propylene random copolymer fraction, (C) 1-20 wt % of a first elastomeric ethylene-propylene copolymer fraction, (D) 1-20 wt % of a second elastomeric ethylene-propylene copolymer fraction, and (E) 5-25 wt % of an ethylene homo- or copolymer fraction having a density between 905 and 925 kg/m 3 , wherein the ratio of intrinsic viscosity of fraction (A) to the intrinsic viscosity of combined fractions (A) and (B) is smaller than 0.9, the comonomer content of the propylene random copolymer fraction (B) is up to 5 wt %, the first elastomeric ethylene-propylene copolymer fraction (C) has a different ethylene content than the second elastomeric ethylene-propylene copolymer fraction (D), and the MFR 2 of the heterophasic polypropylene composition is at least 20 g/10 min, the values of MFR 2 being measured according to ISO 1133 (230° C., 2.16 kg load).