Basell Polyolefine Gmbh

Thomas Lindner

Gerd Mannebach

Harald Schmitz

Peter Bisson

Bernd Hoecker

Roland Andernach

The present disclosure relates to a polyethylene composition comprising copolymers of ethylene with 1-alkenes, or mixtures of ethylene homopolymers and said copolymers of ethylene with 1-alkenes, wherein the polyethylene composition has a molar mass distribution width (MWD) M/Mof from 7 to 15, a density of from 0.942 to 0.954 g/cm, a weight average molar mass Mof from 20,000 g/mol to 500,000 g/mol, a MIE of from 1.0 to 3.0 g/10 min, a MIF of from 100 to 200 g/10 min, and a ratio MIF/MIE of from 40 to 50.

Polyethylene for injection molding

An ethylene homo- or copolymer composition is stabilized by suitable stabilizers conferring improved resistance against thermo-oxidative degradation, which occurs in the presence of liquid fuels comprising biodiesel, such as vegetable oil esters, in combination with oxygen. The stabilizers comprise a combination of at least two sterically hindered amine compounds or N-hydroxy- or N-oxylderivatives thereof in an amount of from 100 to 10 000 ppm. Such ethylene homo- or copolymer composition is highly suitable for articles of plastic and components for the transport and storage of liquid fuels comprising biodiesel, such as vegetable oil esters, preferably for plastic fuel tanks for automotive vehicles.

Ethylene polymer having improved resistance against thermooxidative degradation in the presence of liquid fuels comprising biodiesel and oxygen and plastic fuel tank made of it

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Groβ-Zimmern, Germany

Thomas Lindner