Strippable semiconductive composition comprising low melt temperature polyolefin

The present invention relates to a semiconductive polymer composition having easily controllable stripping characteristics, especially for an electric power cable. The semiconductive polymer composition comprises an ethylene copolymer comprising polar co-monomer units, wherein the amount of the pola...

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Bibliographische Detailangaben
Hauptverfasser: MARSDEN, ERIC, FAGRELL, OLA, KUNG, DOMINIC, JAEGER, KARL-MICHAEL, TORGERSEN, ULF
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The present invention relates to a semiconductive polymer composition having easily controllable stripping characteristics, especially for an electric power cable. The semiconductive polymer composition comprises an ethylene copolymer comprising polar co-monomer units, wherein the amount of the polar co-monomer units in the ethylene copolymer is 10 wt.% or more, based on the total weight of the ethylene copolymer; an olefin copolymer comprising propylene monomer units and monomer units of an alpha-olefin having at least 4 carbon atoms, wherein the olefin copolymer has a melting point of 110 °C or less, and carbon black in an amount of from 10 to 50 wt.%, based on the total weight of the semiconductive polymer composition, wherein the olefin copolymer (B) is prepared by using a metallocene polymerisation catalyst. The composition provides improved strippability and enhanced mechanical as well as electrical property profile.