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AssigneeBasell Polyolefine GmbH
InventorsJoachim Berthold, Klaus Föttinger, Gerhardus Meier
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The present invention relates to a polyethylene molding composition which has a multimodal molar mass distribution and is particularly suitable for thermoforming to produce fuel containers having a capacity in the range from 20 to 200 I. The molding composition has a density at a temperature of 23° C. in the range from 0.948 to 0.953 g/cm3 and an MFR190/21.6 in the range from 4.5 to 6 g/10 min. It comprises from 40 to 50% by weight of a low molecular weight ethylene homopolymer A, from 35 to 45% by weight of a high molecular weight copolymer B of ethylene and another olefin having from 4 to 8 carbon atoms and from 10 to 25% by weight of an ultrahigh molecular weight ethylene copolymer C.
A polyethylene molding composition which has a multimodal molar mass distribution, a density at a temperature of 23° C. in the range from 0.948 to 0.953 g/cm3 and an MFI190/21.6 in the range from 4.5 to 6 dg/min, and comprises from 40 to 50% by weight of a first, low molecular weight ethylene homopolymer A, from 35 to 45% by weight of a second, high molecular weight copolymer B of ethylene and another olefin having from 4 to 8 carbon atoms and from 10 to 25% by weight of a third, ultrahigh molecular weight ethylene copolymer C, with all percentages being based on the total weight of the molding compositions.
Dependencies are inferred from the claim text.