Abstract: The present invention relates to a flame retardant polymer composition comprising (A) 2.0 to 15.0 wt % of a copolymer of ethylene comprising units selected from the group consisting of methyl acrylate, methyl methacrylate or mixtures thereof; (B) 0 to 4.0 wt % of a polyethylene and/or polypropylene containing units originating from maleic acid anhydride; (C) 0.1 to 3.0 wt % of a silicon fluid and/or silicone gum; (D) 40.0 to 55.0 wt % of a magnesium hydroxide; (E) 2.0 to 15.0 wt % of a copolymer of ethylene and alpha olefin comonomer units having from 4 to 10 carbon atoms, which has a density of from 860 to 910 kg/m3, determined according to ISO 1183; (F) 18.0 to 35.0 wt % of a copolymer of ethylene and alpha olefin comonomer units having from 4 to 10 carbon atoms, which has a density of from 920 to 960 kg/m3, determined according to ISO 1183, and a melt flow rate MFR5 of from 0.05 to 2.50 g/10 min, determined according to ISO 1133 at a temperature of 190° C. and a load of 5.0 kg; and (G) 0 to 8.

Abstract: The present invention relates to a crosslinkable polymer composition comprising a copolymer of ethylene and hexene, which is a multimodal polyethylene having at least two polymer fractions present in the polymer, each having different weight average molecular weights, the copolymer having a crystallinity, determined by DSC as described herein, of at least 40%, the polymer composition further comprising a carbon black content of not more than 4 wt. %, based on the total weight of the polymer composition, wherein the polymer composition does not contain a silane-modified polymeric component, and the polymer composition passes the tracking resistance test at least at 4.5 kV for 1 h followed at 4.

Abstract: The present invention relates to a polypropylene composition comprising (A) a copolymer of propylene and comonomer units selected from ethylene and alpha-olefins having from 4 to 12 carbon atoms with a total amount of comonomer units of from 10.0 to 16.0 wt %, based on the total amount of monomer units in the polypropylene composition, and (B) an alpha-nucleating agent; wherein the polypropylene composition has a xylene cold soluble (XCS) fraction in a total amount of from 25.0 to 50.0 wt %, based on the total weight amount of the polypropylene composition, with an amount of comonomer units of at least 23.0 wt %, based on the total amount of monomer units in the xylene cold soluble (XCS) fraction, a melt flow rate MFR2 of from 0.5 to 5.

Abstract: The present invention relates to a polypropylene composition comprising a copolymer of propylene and comonomer units selected from ethylene and alpha-olefins having from 4 to 12 carbon atoms with a total amount of comonomer units of from 10.0 to 16.0 wt %, based on the total amount of monomer units in the polypropylene composition, wherein the polypropylene composition has a xylene cold soluble (XCS) fraction in a total amount of from 25.0 to 50.0 wt %, based on the total weight amount of the polypropylene composition, with an amount of comonomer units of at least 22 wt %, based on the total amount of monomer units in the xylene cold soluble (XCS) fraction, a melt flow rate MFR2 of from 0.5 to 2.

Abstract: The present invention relates to a crosslinkable polymer composition comprising (A) a high density ethylene homo- or copolymer having a density, determined according to ISO 1183, of at least 930 kg/m3, and (B) a copolymer of ethylene with a silane groups-containing comonomer having a content of silane groups-containing comonomer of not more than 4.0 wt %, wherein the polymer composition passes the tracking resistance test, determined according to IEC60587 (2007), method 2A at 4.5 kV for 1 h and 4.75 kV for 1 h on compression molded plaques prepared according to ISO 11357. The present invention further relates to a track resistant wire or cable, preferably a power cable or an optical cable comprising at least one layer of the above polymer composition or to the use of the polymer composition in a wire or cable for increasing track resistance, and/or for increasing fire retardancy along the length of the wire or cable.

Abstract: The present invention relates to a semiconductive composition comprising (A) at least 52.0 wt %, preferably from 55.0 to 90.0 wt %, more preferably from 60.0 to 85.0 wt %, most preferably from 65.0 to 80.0 wt % of a heterophasic propylene copolymer having a matrix phase and an elastomeric phase dispersed in said matrix phase, based on the total weight amount of the semiconductive composition; and (B) from 5.0 to 40.0 wt %, preferably from 10.0 to 38.0 wt %, more preferably from 15.0 to 35.0 wt %, most preferably from 20.0 to 33.0 wt % of carbon black based on the total weight amount of the semiconductive composition, an article comprising said semiconductive composition, preferably a cable comprising an semiconductive layer comprising said semiconductive composition and the use of said semiconductive composition as inner and/or outer semiconductive layer for medium and high voltage cables.

Abstract: The present invention relates to a flame retardant polymer composition comprising at least the following components A) 2.0 to 49.8 wt.-% based on the overall weight of the polymer composition of a copolymer comprising ethylene units and units selected from the group consisting of methyl acrylate, methyl methacrylate and mixtures thereof; B) 0.1 to 6.0 wt.-% based on the overall weight of the polymer composition of a polyethylene and/or polypropylene containing units originating from maleic acid anhydride; C) 0.1 to 5.0 wt.-% based on the overall weight of the polymer composition of a silicone fluid and/or a silicon gum; D) 50.0 to 70.0 wt.-% based on the overall weight of the polymer composition of a magnesium hydroxide; and E) 0 to 17.0 wt.

Abstract: The invention relates to a foamable polymer composition comprising a polyolefin polymer which polyolefin polymer does not bear silane moieties and comprises 20 to 99.99 wt. % linear low density polyethylene, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of citric acid and/or derivatives of citric acid or mixtures thereof. Further the invention relates to a foamable polymer composition comprising a polyolefin polymer, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of expandable polymeric microspheres, and the composition does not comprise fluororesin. Further the invention relates to a foamed polymer composition obtained by foaming this foamable polymer composition.

Abstract: A bend limiting device for a cable includes at least one elongated sleeve member with an entrance end exhibiting an entrance opening and an opposite exit end exhibiting an exit opening for the cable, an outer abutment surface between the entrance and exit ends secures against a rigid surface of a floating marine installation or vessel, an axially through-going hole between the entrance opening and the exit opening accommodates a portion of the cable, and at least one clamping device secures the sleeve member in a fixed position around the cable portion. The outer abutment surface of the sleeve member allows it to be secured against the rigid surface by applying a pulling force on the cable in a direction from the abutment surface to the rigid surface, as well as to be detached from the rigid surface when the application of pulling force on the cable ceases.

Abstract: A self-supporting electric power cable is disclosed. The electric power cable includes an outer jacket portion and a core portion. The core portion includes at least one insulated conductor and at least one supporting cord. The at least one insulated conductor includes a number of individual wires, and the at least one supporting cord includes synthetic fibers. The number of individual wires, individually or arranged in bundles, are arranged in a first lay direction. The at least one insulated conductor and the at least one supporting cord are arranged in a second lay direction. The at least one supporting cord is arranged as a separate unit in a cross sectional sector of the self-supporting electric power cable. Thus flexible and durable power cable for sea use is provided. Also an offshore arrangement is disclosed herein.

Abstract: The current invention relates to self-supporting cables that often are aerial mounted between cable fixing points (800) and where the conductors in the cables act as the bearing elements. In this type of cables, slip-page between the surfaces of different layers in the cable is undesirable. On the other hand, it must be possible to easily bend the cable, even for larger dimensions. Both these requirements are difficult to meet with the solutions from prior art. The present invention overcomes this by introducing an intermediate layer (130) in the cable (100) located between and adhered to the surfaces (112, 121) of the layers and having a frictional inner structure allowing the two surfaces (112, 121) to slip relatively each other in longitudinal direction enough so that the cable (100) can be bent but prevents the two surfaces {112, 121) from slipping in response to an inwardly directed radial pressure force (F) at the cable fixing points (800).

Abstract: A self-supporting electric power cable is disclosed. The electric power cable includes an outer jacket portion and a core portion. The core portion includes at least one insulated conductor and at least one supporting cord. The at least one insulated conductor includes a number of individual wires, and the at least one supporting cord includes synthetic fibres. The number of individual wires, individually or arranged in bundles, are arranged in a first lay direction. The at least one insulated conductor and the at least one supporting cord are arranged in a second lay direction. The at least one supporting cord is arranged as a separate unit in a cross sectional sector of the self-supporting electric power cable. Thus flexible and durable power cable for sea use is provided. Also an offshore arrangement is disclosed herein.

Abstract: The application relates to a grounding conductor and an electrical system including such a grounding conductor including a plurality of conductive aluminum strands where each such strand is provided with at least one sheath of an electrically conductive polymer material having a volume resistivity (?) below 100 ?·cm.

Abstract: A bend limiting device for a cable includes at least one elongated sleeve member with an entrance end exhibiting an entrance opening and an opposite exit end exhibiting an exit opening for the cable, an outer abutment surface between the entrance and exit ends secures against a rigid surface of a floating marine installation or vessel, an axially through-going hole between the entrance opening and the exit opening accommodates a portion of the cable, and at least one clamping device secures the sleeve member in a fixed position around the cable portion. The outer abutment surface of the sleeve member allows it to be secured against the rigid surface by applying a pulling force on the cable in a direction from the abutment surface to the rigid surface, as well as to be detached from the rigid surface when the application of pulling force on the cable ceases.

Abstract: The application relates to a grounding conductor and an electrical system including such a grounding conductor including a plurality of conductive aluminium strands where each such strand is provided with at least one sheath of an electrically conductive polymer material having a volume resistivity (?) below 100 ?·cm.

Abstract: A self-supporting cable including an outer portion and an inner portion is provided, as well as a combination of a self-supporting cable and a suspension arrangement. The inner portion includes at least one insulated conductor and the outer portion includes a first inner surface and an external surface. The external surface is arranged to engage with a suspension arrangement. The inner portion includes a first outer surface, the first outer surface abutting against the first inner surface. The outer portion includes an outer layer and a metal tape adhered to the outer layer. The outer layer includes the external surface, and the metal tape includes the first inner surface. The first inner surface being of metal and adapted for, during local load, frictional engagement with the material of the first outer surface increases the effectiveness of a functional grip between first outer surface and first inner surface.

Abstract: An insulated conductor assembly is provided. The assembly comprises at least two insulated conductors, a jacket enclosing the at least two insulated conductors, and a filling compound arranged between the jacket and the at least two insulated conductors. The assembly comprises first sections, extending along the assembly, completely filled with the filling compound between the jacket and the at least two insulated conductors, and second sections, extending along the assembly, void of filling compound between the jacket and the at least two insulated conductors. Further a method of manufacturing an insulated conductor assembly and a manufacturing arrangement for manufacturing an insulated conductor assembly are provided.

Abstract: A self-supporting cable including an outer portion and an inner portion is provided, as well as a combination of a self-supporting cable and a suspension arrangement. The inner portion includes at least one insulated conductor and the outer portion includes a first inner surface and an external surface. The external surface is arranged to engage with a suspension arrangement. The inner portion includes a first outer surface, the first outer surface abutting against the first inner surface. The outer portion includes an outer layer and a metal tape adhered to the outer layer. The outer layer includes the external surface, and the metal tape includes the first inner surface. The first inner surface being of metal and adapted for, during local load, frictional engagement with the material of the first outer surface increases the effectiveness of a functional grip between first outer surface and first inner surface.

Abstract: The current invention relates to self-supporting cables that often are aerial mounted between cable fixing points (800) and where the conductors in the cables act as the bearing elements. In this type of cables, slippage between the surfaces of different layers in the cable is undesirable. On the other hand, it must be possible to easily bend the cable, even for larger dimensions. Both these requirements are difficult to meet with the solutions from prior art. The present invention overcomes this by introducing an intermediate layer (130) between the surfaces (112, 121) comprising at least on tape (511) with friction particles (512) where the friction obtained by the friction particles (512) is low enough to allow the two surfaces (112, 121) to slip relatively each other in longitudinal direction enough so that the cable 100 can be bent but prevents the two surfaces (112, 121) from slipping in response to an inwardly directed radial pressure force (F) at the cable fixing points (800).

Abstract: The present invention relates to problems how to keep cable arrangement functional, or at least make the damage as little as possible, after being exposed to different types of mechanical overloads. The problems are solved by methods and arrangements in which the securing means and the contact material of the securing means are arranged so that the cable can slide through the securing means when it is exposed to mechanical overloads.