Patent ID: 6986922

Claim:
Single layer or multilayer polyolefin foam pipe with improved compression strength comprising at least one layer comprised of a polyolefin foam, wherein the polyolefin foam layer has a density of 50 to 850 kg/m 3 and comprises mixtures of A) 5 to 80% by weight of a compound A, which is selected from the group consisting of modified propylene polymers with a melt index of 0.05 to 10 g/10 min at 230° C./2.16 kg, the modified propylene polymers having strain hardening behaviour, and mixtures of said modified propylene polymers, and B) 20 to 95% by weight of a compound B which is selected from the group consisting of propylene homopolymers with a stereospecifity index >98% and a melt index of 0.05 to 10 g/10 min at 230° C./2.16 kg and copolymers from 80.0 to 99.9% by weight of propylene and 0.1 to 20.0% by weight of ethylene or α-olefins with 4 to 18 carbon atoms with a stereospecifity index of the propylene homopolymer matrix of >96% and a melt index of 0.1 to 10 g/10 min at 230° C./2.16 kg, and mixtures of said propylene homopolymers and/or copolymers.