Polyolefin composition having a high balance of stiffness...

Details Polyolefin composition having a high balance of stiffness... Polyolefin composition having a high balance of stiffness...

C - Chemistry, Metallurgy

08

L

C08L 23/10 (2006.01) B60R 21/00 (2006.01)

Patent

CA 2534903

A polyolefin composition comprising (percentage by weight): (A) from 60 to 85% of a broad molecular weight distribution propylene polymer (component A) having a polydispersity index from 5 to 15 and melt flow rate of from 20 to 78 g/10 min (according to ASTM-D 1238, condition L); and (B) from 15 to 40% of a partially xylene-soluble olefin polymer rubber (component B) containing at least 65% by weight of ethylene. Said composition finds application in automotive field.

composition de polyoléfine comprenant (en pourcentage de poids): (A) de 60 à 85% d'un polymère de propylène à distribution de poids moléculaire étendue (composant A) à indice de polydispersité compris entre 5 et 15 et un débit d'écoulement en fusion de 20 à 78 g/10 mn (selon ASTM-D 1238, condition L); et (B) de 15 à 40% d'un caoutchouc de polymère oléfinique patiellement soluble dans le xylène (composant B) contenant au moins 65% en poids d'éthylène. Ladite composition est destinée au secteur automobile.

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