Multimodal polyethylene composition for injection moulded transport packaging articles

• Main Authors: STAAL EGGEN SVEIN, NORD-VARHAUG KATRIN, ROERVIK TINE
• Format: Patent
• Language: English; French; German
• Published: 17.01.2007
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to a polyethylene composition wherein (i) the composition has an MFR 2 of 0.1 to 100 g/10min, (ii) the shear thinning index SHI (1,100 ) and the log MFR 2 of the composition satisfy the following relation: SHI ( 1 , 100 ) ‰¥ - 5.5 €ƒlog€ƒMFR 2 [ g / 10 min ] / ( g / 10 min ) + 9.66 , and (iii) the composition has a Charpy impact strength (23°C) of 3 kJ/m 2 or more. Furthermore, the present invention relates to a process for the production of said polyethylene resin as well as the use of the composition for the production of an injection moulded article, in particular a transport packaging or houseware article.