Abstract: Composition containing a polyethylene powder having: (a) a specific density of 930 kg/m3 or less; (b) a melt index MI2 greater than 0.5 g/10 min; (c) a ratio of HLMI/MI2 of less than 25, where HLMI is high load melt index measured under a load of 21.6 kg; (d) a bulk density of at least 350 kg/m3; and (e) a d50 greater than 500 ?m, and absorbed within said powder at least 1 wt % of a liquid additive. The polyethylene powder has a porosity of at least 0.04 cm3/g for pores smaller than 2?m.

Abstract: Power wire or cables comprise polyethylene compositions prepared by use of a single site catalyst system and in particular comprise copolymers of ethylene and ?-olefins prepared by use of metallocene catalyst systems. The polyethylene compositions deliver a unique combination of mechanical properties and processing behaviour. They are particularly suitable for insulating layers in low and medium voltage applications as well as for jacketing layers.

Abstract: An insulated cable is disclosed which comprises an electrical core conductor (1) having arranged coaxially around it at least three extruded layers of polymer-based material, which layers comprise an insulating layer (3) comprising a copolymer of polyethylene and an acrylate, an outer layer (5) of a semi-conductive material, and an intermediate layer (4) between the insulating and outer layers which comprises polyethylene and is substantially free of any acrylate or conducting material, such that the outer layer (5) is strippable from the intermediate layer (4).

Abstract: A composition is disclosed comprising a polyethylene powder having: (a) a specific density of 930 kg/m3 or less; (b) a melt index MI2 greater than 0.5 g/10 min; (c) a ratio of HLMI/MI2 of less than 25, where HLMI is high load melt index measured under a load of 21.6 kg; (d) a bulk density of at least 350 kg/m3; and (e) a d50 greater than 500 ?m, and absorbed within said powder at least 1 wt % of a liquid additive.

Abstract: Drawn tape, fiber or filament including a multimodal resin having a density of at least 940 kg/m3, a melt index MI5 of 0.05 to 5 g/10 min, and a molecular weight distribution of the resin being less than 40.

Abstract: A process for the production of a composition for screening solar radiation which comprises a transparent polymer incorporating an interference pigment comprising a platelet shaped material is disclosed, which process comprises the steps of incorporating the interference pigment into the polymer, and then stretching the resultant polymer in at least one direction to at least twice its original length in that direction. The resultant composition has improved radiation screening properties.

Abstract: Pigmented tape, fibre or filament comprising 75-99.5 wt % of an unpigmented polyethylene having a density of 928-940 kg/m3 and a melt index MI2 of at least 0.3 g/10 mins, and up to 25 wt % of a pigmented polyethylene, wherein the total amount of pigment in the tape, fibre or filament is at least 0.5 wt %.

Abstract: A drawn tape, fibre or filament comprising a multimodal resin having a density of at least 940 kg/m3 a melt index MI5 of 0.05 to 5 g/10 min, and a molecular weight distribution of the resin being less than 40.

Abstract: A net for packaging comprising high density polyethylene, which contains from 0.5 to 10% by weight of poly-isobutene. This imparts additional tackiness to the net, but does not adversely affect the manufacturing process.

Abstract: A process for the production of a composition for screening solar radiation which comprises a transparent polymer incorporating an interference pigment comprising a platelet shaped material is disclosed, which process comprises the steps of incorporating the interference pigment into the polymer, and then stretching the resultant polymer in at least one direction to at least twice its original length in that direction. The resultant composition has improved radiation screening properties.

Abstract: Composition which can be crosslinked under the effect of an ionizing radiation comprising a thermoplastic copolymer of vinylidene fluoride and of chlorotrifluoroethylene and an effective amount of a crosslinking promoter, such as a triallyl cyanurate or triallyl isocyanurate. Process for the crosslinking by irradiation of the crosslinkable composition under air by means of an ionizing radiation, such as &bgr;-radiation, at a dose of 10 to 100 kGray. Crosslinkable and crosslinked shaped articles, such as sheaths for electrical cables and pipes for oil products.

Abstract: Polymer compositions based on vinylidene fluoride resins which are particularly suitable for the manufacture of pipes for conveying hot hydrocarbons under pressure, comprising by weight; (A) from 60 to 80% of at least one PVDF homopolymer; (B) from 20 to 40% of at least one thermoplastic copolymer of vinylidene fluoride (VF2) and of at least one other fluoromonomer (for example hexafluoropropylene, chlorotrifluoroethylene or trifluoroethylene), containing approximately from 5 to 25% of this other monomer; and (C) a plasticizer, in proportions of 5 to 20% [relative to the total weight of the polymers (A) and (B)], preferably dibutyl sebacate or a polyester of molecular mass of between 1500 and 5000.

Abstract: Composition which can be crosslinked under the effect of an ionizing radiation comprising a thermoplastic copolymer of vinylidene fluoride and of chlorotrifluoroethylene and an effective amount of a crosslinking promoter, such as a triallyl cyanurate or triallyl isocyanurate.

Abstract: Composition which can be crosslinked under the effect of an ionizing radiation comprising a thermoplastic copolymer of vinylidene fluoride and of chlorotrifluoroethylene and an effective amount of a crosslinking promoter, such as a triallyl cyanurate or triallyl isocyanurate. Process for the crosslinking by irradiation of the crosslinkable composition under air by means of an ionizing radiation, such as &bgr;-radiation, at a dose of 10 to 100 kGray. Crosslinkable and crosslinked shaped articles, such as sheaths for electrical cables and pipes for oil products.

Abstract: Polymer compositions based on vinylidene fluoride resins which are particularly suitable for the manufacture of pipes for conveying hot hydrocarbons under pressure, comprising by weight;

Abstract: Polymer compositions based on vinylidene fluoride resins which are particularly suitable for the manufacture of pipes for conveying hot hydrocarbons under pressure, comprising by weight; (A) from 60 to 80% of at least one PVDF homopolymer; (B) from 20 to 40% of at least one thermoplastic copolymer of vinylidene fluoride (VF2) and of at least one other fluoramonomer (for example hexafluoropropylene, chlorotrifluoroethylene or trifluoroethylene), containing approximately from 5 to 25% of this other monomer; and (C) a plasticizer, in proportions of 5 to 20% [relative to the total weight of the polymers (A) and (B)], preferably dibutyl sebacate or a polyester of molecular mass of between 1500 and 5000.

Abstract: Composition which can be crosslinked under the effect of an ionizing radiation comprising a thermoplastic copolymer of vinylidene fluoride and of chlorotrifluoroethylene and an effective amount of a crosslinking promoter, such as a triallyl cyanurate or triallyl isocyanurate.Process for the crosslinking by irradiation of the crosslinkable composition under air by means of an ionizing radiation, such as .beta.-radiation, at a dose of 10 to 100 kGray.Crosslinkable and crosslinked shaped articles, such as sheaths for electrical cables and pipes for oil products.

Abstract: The compositions based on copolymers of vinylidene fluoride and of ethylenically unsaturated fluorine-containing comonomers, containing at least 75% by weight of vinylidene fluoride include polyvinyl chloride and an effective quantity of a methacrylic polymer (producing compatibility). These compositions exhibit in particular improved dielectric properties, which makes them particularly advantageous for sheathing electrical cables.