Borealis Gmbh

Teufelberger Seil Gesellschaft M.b.h.

Roland Konrad

Klaus Bernreitner

Stefan Schiesser

Robert Traxl

Peter Baldinger

Karl Ebner

Diethart Güttler

Florian Teufelberger

Reinhold SE Schneider

The invention relates to a high resistance polypropylene tube especially with a high modulus of elasticity in extension, high impact strength, annular rigidity and resistance towards knocks. The inventive tube is made of polypropylene and has a modulus of elasticity in extension of 1300-2300 N/mm and an impact strength of 60-110 kJ/m . The inventive tube is produced by extrusion of a plastic moulding material consisting of two constituents A and B of composition A) 80-98 mass parts of an isotactic polypropylene homopolymer as a coherent matrix constituent with a decade regularity of >95% and B) 2-20 mass parts of a copolymer, consisting of 50-70 mass parts of propylene and 30-50 mass parts of ethylene and/or other C4-C8-&agr;-olefins as a dispersedly distributed elastomer component. The intrinsic viscosity ratio of both components B/A is 0.9-1.5 and the melt flow index of the moulding material is 0.15-0.8 g/10 min. The polypropylene tubes are suitable for use in waste water systems, especially as gully pipes, rainwater pipes, domestic drainpipes, or sound insulation pipes or shaft elements.

High resistance polypropylene tube

Growing community of inventors

Linz, Austria

Roland Konrad