Beta nucleated heterophasic polypropylene composition

A heterophasic propylene copolymer composition (HPPC), having an MFR2 measured according to ISO 1133 at 230° C. and 2.16 kg in the range from 15.0 to 50.0 g/10 min and a beta-phase content of 75 to 95%, measured by wide angle X-ray scattering (WAXS) as described herein, comprising:

• (a) a propylene homopolymer matrix, and
• (b) an ethylene-propylene rubber being dispersed in said matrix,
• wherein the heterophasic propylene copolymer composition (HPPC) has
• (i) a content of 2,1-regiodefects determined by 13C-NMR of 0.2 to 0.8 mol % of the xylene cold insoluble fraction (XCI) according to ISO 16152;
• (ii) a crystalline fraction (CF), determined according to CRYSTEX QC method ISO 6427 Annex B, present in an amount in the range from 50.0 to 95.0 wt.-%, relative to the total weight of the heterophasic propylene copolymer composition (HPPC);
• and
• (iii) a soluble fraction (SF), determined according to CRYSTEX QC method ISO 6427 Annex B, present in an amount in the range from 5.0 to 50.0 wt.-%, relative to the total weight of the heterophasic propylene copolymer composition (HPPC);
• and
• (iv) an ethylene content of the soluble fraction (SF), measured by Fourier Transform Infrared Spectroscopy (FTIR) during CRYSTEX analysis, in the range of 18.0 to 50.0 wt.-%;
• and
• (v) an intrinsic viscosity of the soluble fraction (SF) measured according to ISO 1628-1 (at 135° C. in decalin), in the range from 2.0 to 6.0 dl/g;
• and
• (vi) a ratio of the intrinsic viscosity of the soluble fraction (SF) measured according to ISO 1628-1 (at 135° C. in decalin) versus the intrinsic viscosity of the crystalline fraction (CF) measured according to ISO 1628-1 (at 135° C. in decalin) IV(SF)/IV(CF) in the range of 1.0 to 4.0.