Crosslinkable polyethylene composition

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 255/02 (2006.01) B29C 47/00 (2006.01)

Patent

CA 2397924

The invention concerns a crosslinkable polyethylene composition comprising 0.05 to 0.24 hydrolysable silane groups per 100 -CH¿2?- units and having a standard mass density of at least 954 kg/m?3¿ and melt index MI¿5? less than 1.5 g/10 min. Pipes transporting pressurised fluids are obtainable by extruding said composition prior to hydrolysing them.

Composition à base de polyéthylène réticulable comprenant de 0,05 à 0,24 groupements silanes hydrolysables par 100 unités -CH2- et ayant une masse volumique standard MVS d'au moins 954 kg/m3 et un indice de fluidité MI5 inférieur à 1,5 g/10 min. Tuyaux pour le transport de fluides sous pression susceptibles d'être obtenus par l'extrusion de cette composition puis par leur hydrolyse.

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