Borealis Ag

Boreaus Ag

Thomas Steffl

Christer Svanberg

Annika Smedberg

Katja Ellen Klimke

Per-Ola Hagstrand

Villgot Englund

Ulf Nilsson

Johan Andersson

David Friel

Tung Pham

Johannes Wolfschwenger

Doris Machl

Anneli Pakkanen

Andrey Buryak

Petri Rekonen

Michiel Friso Bergstra

Albrecht Dix

Sybille Simon

Christian Piel

Carl-Gustav Ek

Jennie Langeström

Hans Mårtensson

Described herein are polymer compositions useful as a semiconductive layer suitable for cables. The polymer compositions include (a) a heterophasic copolymer of propylene, (b) a polar copolymer having a polar comonomer having polar groups, (c) a solid conductive filler, and optionally (d) a polyolefin functionalised with a mono- or polycarboxylic acid compound or a derivative of a mono- or polycarboxylic acid compound, wherein said compostion is not crosslinked by the addition of a crosslinking agent. Also described herein is a process for producing the polymer compositions as well as the use of the compositions thereof.

Copolymer composition for semiconductive cable layer

The present invention relates to a cable comprising a conductor surrounded by one or more layers, wherein at least one layer comprises a polymer composition comprising a copolymer of ethylene with one or more comonomers, to a process for producing the cable and to a polymer composition suitable as a cable layer material.

Method of producing a cable comprising a multimodal ethylene copolymer

The present invention relates to a polymer composition with improved electrical properties and to a use thereof preferably in electrical devices as well as to a cable surrounded by at least one layer including the polymer composition.

Polymer composition for electrical devices

The present invention relates to a polymer composition, to the use of the composition for producing an electrical device, as well as to a cable surrounded by at least one layer including the polymer composition.

Described herein is a cable that includes a conductor surrounded by at least one semiconductive layer, wherein the layer comprises a polymer composition comprising a polypropylene homopolymer or a polypropylene copolymer with one or more comonomers, a polyolefin functionalized with an anhydride of a mono- or polycarboxylic acid, wherein said anhydride of a mono- or polycarboxylic acid can be linear or cyclic, wherein the functionalized polyolefin is different from the polypropylene homopolymer or polypropylene copolymer or the second polymer, and wherein the amount of the functionalized polyolefin is up to 10 wt % based on the total amount of the polymer composition, a solid conductive filler and a LDPE homopolymer or a LDPE copolymer of ethylene with one or more comonomers having a melting temperature (Tm) less than the Tm of the polypropylene homopolymer or polypropylene copolymer. Also described herein is a process for producing the polymer composition.

Cable with semiconductive layer made of polypropylene composition and improved long term thermal stability

The invention relates to a cable having a conductor surrounded by at a least one polymer layer having a polymer composition of the invention which has a polymer component and optionally a carbon black (CB) component, to a production process of the cable and to a polymer composition of the invention which has a polymer component and optionally a carbon black (CB) component and which is for use in a cable layer.

Cable and polymer composition

Cable layer comprising a propylene polymer composition comprising (a) a polypropylene (A) (b) an elastomeric copolymer (E) comprising units derived from propylene and ethylene and/or C4 to C20 &#x3b1;-olefin and (c) a polar ethylene polymer (C) wherein the cable layer and/or the propylene polymer composition has a gel content of equal or more than 0.20 wt.-%.

Cable layer of modified soft polypropylene with improved stress whitening resistance

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Stenungsund, Sweden

Thomas Steffl