Medium modulus molded material comprising substantially...

Details Medium modulus molded material comprising substantially... Medium modulus molded material comprising substantially...

C - Chemistry, Metallurgy

08

L

C08L 23/04 (2006.01) C08L 23/08 (2006.01)

Patent

CA 2220439

Medium modulus molded polyethylene materials with improved impact strength are made. The polyethylene material is molded to pipes, bars and sheets. The molded material comprises high molecular weight linear polyethylene and a substantially linear ethylene/.alpha.-olefin interpolymer. The material is more than about 0.23 mm thick, has a density in the range of 0.923 to 0.95 grams/cubic centimeter (g/cc) and has an excellent impact resistance.

On décrit des matériaux à base de polyéthylène moulés à module d'élasticité moyen, présentant une meilleure résistance aux chocs. Ce matériau de polyéthylène est moulé sous forme de tuyaux, de barres ou de feuilles. Il se compose d'un polyéthylène linéaire à poids moléculaire élevé et d'un copolymère d'éthylène/.alpha.-oléfine essentiellement linéaire. Le matériau, dont l'épaisseur est supérieure à environ 23 mm et la densité comprise entre 0,923 et 0,95 grammes/cm?3¬, présente une excellente résistance aux chocs.

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