Polyolefin masterbatch and composition suitable for injection molding

A masterbatch composition comprising:

• (A) 74-86 wt. %, based upon the total weight of the masterbatch composition, of a component (A) being a propylene homopolymer or a copolymer of propylene with ethylene or C4-C10 alpha olefins, having a polydispersity index from 5 to 10, and an MFRA according to ISO 1133 (230° C./2.16 kg) ranging from 20 to 60 g/10 min;
• and
• (B) 14-26 wt. %, based upon the total weight of the masterbatch composition, of a component (B) being a propylene-ethylene copolymer comprising 30-42 wt. %, based upon the total weight of the propylene-ethylene copolymer, of ethylene derived units and having a value of the intrinsic viscosity [η] of the fraction soluble in xylene at room temperature ranging from 5 to 9 dl/g,
• said masterbatch composition having a total MFR from 5.9 to 9.7 g/10 min, an Izod impact resistance at 23° C. ranging from 8.4 to 12.6 kJ/m2, an Izod impact resistance at 0° C. ranging from 4.2 to 5.2 kJ/m2, a value of the flexural modulus measured according to ISO method 178 ranging from 1100 to 1450 MPa and an elongation at break value measured according to ISO method 527 ranging from 730 to 765%.