Multimodal polyethylene material

Details Multimodal polyethylene material Multimodal polyethylene material

C - Chemistry, Metallurgy

08

L

C08L 23/04 (2006.01) C08L 23/08 (2006.01) C08L 23/12 (2006.01)

Patent

CA 2457430

The present invention relates to a polyethylene resin having a multimodal molecular weight distribution, said resin being further characterized in that it has a density in the range of from about 0.925 g/ccm to about 0.950 g/ccm, a melt index (I2) In the range of from about 0.05 g/10 min to about 5 g/10 min, and in that it comprises at least one high molecular weight (HMW) ethylene interpolymer and at least a low molecular weight (LMW) ethylene polymer, and a composition comprising such resin. Also provided is a shaped article comprising said resin or composition, in particular a pipe.

L'invention porte sur une résine de polyéthylène présentant une distribution en poids moléculaire multimodale, une densité comprise entre environ 0,925 g/ccm et environ 0,950 g/ccm, un indice de fluidité (I¿2?) compris entre environ 0,05 g/10 min et environ 5g/10 min, et comprenant au moins un interpolymère d'éthylène de fort poids moléculaire, et au moins un polymère d'éthylène de faible poids moléculaire, et sur une composition comportant ladite résine. L'invention porte également sur un article en forme comprenant lesdites résines ou compositions, et en particulier une pipe.

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