Borealis Ag

Åsa Hermansson

Per-Ola Hagstrand

Thomas Hjertberg

Ola Fagrell

Mattias Bergqvist

Takashi Uematsu

Asa Linder

The invention relates to a foamable ethylene polymer composition comprising at least one antioxidant, at least one process aid and at least 80 wt % of a peroxide-treated ethylene polymer composition. The foamable ethylene polymer composition has melt strength of at least 2 cN, a density of 940 to 970 kg/m3, and dissipation factor measured at 1.9 GHz of 50-80&#x2212;10. The invention further relates to a process for making such a foamable ethylene polymer composition, and use of the foamable ethylene polymer composition in a foamed cable insulation.

Foamable ethylene polymer

This invention relates to silane moisture curable polymer composition and more particularly, to such a polymer composition that is highly diluted by a non-silane containing component, while retaining good high temperatures properties. The invention is a polymer composition comprising a base resin comprising less than 59 wt % of a silane crosslinkable polyethylene (A), an thermoplastic polyolefin free from silane groups (B) wherein the polymer composition comprise a filler with a BET Nitrogen Surface Area larger than 3 m/g (C). The invention also relates to a cable layer of such polymer composition suitably a semiconducting layer of a power cable.

Polymer blends

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Gothenburg, Sweden

Åsa Hermansson