Solvay Polyolefins Europe-belgium S.a.

Innovene Manufacturing Belgium Nv

André Scheelen

Eric Vandevijver

Wim Coppens

Polyethylene-based composition for which the standard density, measured at 23&#xb0; C. according to ASTM Standard D 792, is greater than 940 kg/mand which comprises talc in an amount of less than 1 part per 100 parts by weight of polyethylene. The composition is preferably in the form of extruded granules. It exhibits a markedly improved creep resistance. Process for the manufacture of shaped articles and articles shaped from the composition, in particular pipe couplings and pipes intended for the transportation of pressurized fluids.

Polyethylene-based composition and process for the manufacture of articles shaped from the composition

Multi-layered pipe comprising a main layer of polyethylene compound having a resistance to stress cracking NPT measured according to ISO 13479 standard of less than 8000 hours and an internal layer of polyethylene compound having a resistance to stress cracking NPT of higher than 8000 hours, the thickness of the internal layer being between 1 and 25% of the total pipe thickness but not less than 0.3 mm.

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Brussels, Belgium

André Scheelen