Polyethylene molding composition for producing injection-molded finished parts

A polyethylene molding composition comprising:

• (A) from 25 to 50% by weight, based on the total weight of the molding composition, of a low molecular weight ethylene homopolymer A wherein the homopolymer A has a viscosity number (VN1) between 65 and 100 cm3/g;
• (B) from 28 to 50% by weight, based on the total weight of the molding composition, of a high molecular weight ethylene copolymer B comprising at least one comonomer in the range from 1 to 10% by weight, based on the weight of copolymer B wherein a mixture of homopolymer A and homopolymer B has a viscosity number (VN2) between 100 to 160 cm3/g;
• (C) from 15 to 40% by weight, based on the total weight of the molding composition, of an ultrahigh molecular weight ethylene copolymer C wherein copolymer C comprises at least one comonomer in the range from 1 to 10% by weight, based on the weight of copolymer C wherein a mixture of homopolymer A, homopolymer B and copolymer C has a viscosity number (VN3) between 150 to 240 cm3/g,
• wherein the polyethylene molding composition:
• (i) has a density between 0.948 to 0.957 g/cm3 measured at a temperature of 23° C.,
• (ii) has a melt flow rate (190° C./2.16 kg) between 1 to 2.7 dg/min;
• and
• (iii) has a multimodal molecular mass distribution
• wherein the composition is obtained in a three stage polymerization process using a magnesium titanium containing Ziegler catalyst,
• wherein the three reactors are connected in series, and
• wherein the product of the first reactor is transferred to the second reactor, and the product of the second reactor is transferred to the third reactor, the Ziegler catalyst being added to the first reactor and used in each of the three reactors.