Patent ID: 8207272

Claim:
Heterophasic polypropylene composition comprising: 73 to 98 wt.-% of a polypropylene matrix (M) being a propylene homopolymer, and, 2 to 27 wt.-% of an elastomeric copolymer (E) being dispersed in the matrix (M), based on the polypropylene matrix (M) and the elastomeric copolymer (E) wherein the elastomeric copolymer (E) comprises units derived from propylene and ethylene and/or C4 to C20 α-olefin, and wherein further, Mz/Mw of the xylene cold soluble fraction (XCS) of the heterophasic polypropylene composition is of more than 2.6, wherein Mz is the z-average molecular weight measured according to ISO 16014-4:2003 and Mw is the weight average molecular weight measured according to ISO 16014-4:2003, the intrinsic viscosity of the xylene cold soluble fraction (XCS) of the heterophasic polypropylene composition is above 2.1 dl/g measured according to ISO 1628-1 (at 135° C. in decaline), the MFR 2 (230° C.) of the heterophasic polypropylene composition measured according to ISO 1133 is more than 25 g/10 min, and wherein the amount of propylene derived monomer units in the xylene cold soluble fraction (XCS) of the heterophasic polypropylene composition is at least 58 wt.-%.