Patent ID: 6433087
Filing Date: 2002-08-13
Classification: C08F,F16L

Abstract:
Polypropylene pipe having a modulus of elasticity in tension of 1,300 to 2,300 N/mm2 and and a notch impact strength of 60 to 110 kJ/m2 produced by extruding a thermoplastic molding composition consisting of two components A and B and having the composition ofA) 80 to 98 parts by weight of an isotactic polypropylene homopolymer as a coherent matrix component with a decade regularity of more than 95% and B) 2 to 20 parts by weight of a copolymer consisting of 50 to 70 parts by weight of propylene and 30 to 50 parts by weight of ethylene and/or other C4-C8&agr;-olefins as a dispersely distributed elastomeric component, an intrinsic viscosity ratio of the two components B and A being 0.9 to 1.5 and a melt index of the molding composition being 0.15 to 0.8 g/10 min.