Patent ID: 8822602

Claim:
A heterophasic propylene copolymer (HECO) comprising (a) a polypropylene matrix comprising (a 1 ) a first propylene homopolymer fraction (PPH1) with a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 in the range of 200 to 500 g/10 min (a 2-1 ) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 in the range of 30 to <200 g/10 min or (a 2-2 ) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 in the range of 5 to <30 g/10 min and (a 3-1 ) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 in the range of 0.03 to 5 g/10 min, if the second propylene homopolymer fraction is fraction (a 2-1 ) or (a 3-2 ) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 in the range of 30 to <200 g/10 min, if the second propylene homopolymer fraction is fraction (a 2-2 ), wherein the polypropylene matrix has a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 in the range of 30 to 500 g/10 min and a xylene cold soluble fraction determined at 23° C. according to ISO 6427 in the range of 0.5 to 2.0 wt % (b) an elastomeric propylene copolymer dispersed in said matrix, wherein (i) said heterophasic propylene copolymer has a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 in the range of 25 to 200 g/10 min and (ii) the amorphous phase (AM) of the cold soluble fraction (XCS) of the heterophasic propylene copolymer has an intrinsic viscosity measured according to ISO 1628-1 (at 135° C. in tetraline) of ≧2.0 dl/g.