Patent ID: 11952482
Assignee: BOREALIS AG
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 5:
6. The heterophasic polypropylene composition (C) according to claim 1, wherein the second heterophasic propylene ethylene copolymer (HECO2) has one or more of the following properties:
i) a melt flow rate MFR2, measured according to ISO 1133-1 at 230° C. at a load of 2.16 kg, in the range from 1.0 g/10 min to 20.0 g/10 min;
ii) a total ethylene content (C2), measured by Infrared Spectroscopy during CRYSTEX analysis, in the range from 8.0 to 15.0 wt. %;
iii) an ethylene content of the soluble fraction (C2(SF)), measured by Infrared Spectroscopy during CRYSTEX analysis, in the range from 20.0 to 60.0 wt. %;
iv) an intrinsic viscosity of the crystalline fraction (IV(CF)) in the range from 1.00 to 2.50 dl/g;
v) an ethylene content of the crystalline fraction (C2(CF)), measured by Infrared Spectroscopy during CRYSTEX analysis, in the range from 0.5 to 7.0 wt. %; and
vi) a ratio between the intrinsic viscosity of the soluble fraction and the intrinsic viscosity of the crystalline fraction (IV(SF)/IV(CF)) in the range from 1.00 to 2.50.