Abstract: A cable that comprises a cable core that includes a plurality of twisted wire pairs and each wire of the pairs is insulated. A separating layer surrounds at least one pair of the plurality of twisted wire pairs. The separating layer is a tube with a longitudinal split therein.

Abstract: The present invention relates to a crosslinked polymer containing polyphenylene sulfide (PSS) and an impact modifier, and its use as cable coverings, such as jacket or insulation. The composition contains a crosslinked polymer containing of polyphenylene sulfide (PPS) and an impact modifier. Preferably, the impact modifier is present at about 20-50 percent (by weight of the total composition), preferably about 20-30 percent; and PPS is present at about 50-80 percent (by weight of the total composition), preferably about 70-80 percent. It is preferred that the polymer is crosslinked using irradiation.

Abstract: A cable that comprises a cable core that includes a plurality of insulated pairs of twisted conductors wherein, the insulation of at least one pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is substantially flame retardant, and the insulation of at least another pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant.

Abstract: A data cable with free stripping water blocking material includes a first conductor substantially surrounded by a first foam, a second conductor longitudinally adjacent the first conductor and substantially surrounded by a second foam, a solid coat substantially surrounding the first foam of the first conductor, a filler material, a shielding member, a water swellable tape, and a jacket. The first conductor with the first foam and the solid coat and the second conductor with the second foam are substantially placed within the filler material. The shielding member is placed substantially around the filler material. The water swellable tape is placed substantially around the shielding member. The jacket is placed substantially around the water swellable tape.

Abstract: A data cable includes conductors and a filler material substantially surrounding the conductors. The filler material includes a foam filler and a water blocking material. The data cable can also include insulation substantially surrounding each conductor, foam substantially surrounding each conductor, or a solid coating substantially surrounding each conductor The data cable can further include a shielding member substantially surrounding the filler material or a jacket substantially surrounding the filler material.

Abstract: The invention relates to cover compositions for electric power cables having a polyolefin and a styrene copolymer. The styrene copolymer 1) has a styrene content of 55 percent (by weight base on the total styrene copolymer) or greater; 2) contains a random arrangement of styrene and at least one other block polymer; and/or 3) contains a triblock having the formula S-AS-S, wherein S is styrene and A is alkylene or a mixture of different alkylenes. The cover can be an insulation or a jacket.

Abstract: The present invention relates to halogen-free compositions containing an additive of bohmite, nanoclay, microcrystalline talc, zinc hydroxystannate, and a polyolefin oil. The composition is useful as a covering material (e.g. insulation or jacket) for electrical cables with excellent flame resistance and mechanical properties, such as cold bend and thermomechanical properties.

Abstract: An insulated conductor that comprises a conductor and at least one layer of a composite insulation surrounding the conductor. The composite insulation includes insulating material and micro oxide particles adapted to provide at least one of an increase in the flame retardancy of the insulating material and an improvement in the electrical properties of the insulating material.

Abstract: A composite insulation that comprises an insulating material and amorphous micro oxide particles added to the insulating material by at least 1% weight of the composition insulation wherein the micro oxide particles provide at least one of an increase in the flame retardancy of the insulating material, a reduction in smoke generated, and an improvement in the electrical properties of the insulating material.

Abstract: A cable that comprises at least a first pair of conductors. At least one of the conductors of the first pair of conductors has at least one layer of a composite insulation surrounding the conductor. The composite insulation includes insulating material and micro oxide particles adapted to provide an increase in the flame retardancy of the insulating material and an improvement in the electrical performance of the cable.

Abstract: A cable that comprises a plurality of conductors. Each conductor is surrounded by a layer of insulating material. A jacket encloses the plurality of conductors. The jacket is formed of an insulating material. A separator separates the plurality of conductors. The separator is formed of an insulating material. The insulation material of at least one of the plurality of conductors, the jacket, and the separator includes micro oxide particles to form a composite insulation which has at least one of an increased flame retardancy and improved electrical properties over the insulating material without the micro oxide particles, such that the cable has an improved electrical performance.

Abstract: An improved conductor shielding composition for power cables is disclosed. The composition includes a base polymer, conductive carbon black, polyethylene glycol and a waxy additive. Cable shields prepared from the composition exhibit improved aging performance in accelerated cable life tests (ACLT).

Abstract: The present invention relates to materials for making cable jackets, particularly riser and plenum cables. The materials provide low flammability and allow the cable to meet UL 910 or NFPA 262 or UL 1666 specifications. The material contains PVC resin, a plasticizer, a metal oxide particle, and optionally a brominated phthalate. Preferably, the metal oxide particle is spherical amorphous silicon dioxide. More preferably, the spherical amorphous silicon dioxide has a mean particle size of about 100-200 nm and/or a BET surface area of about 10-30 m2/g. The metal oxide particle is also preferably metal oxide particle non-porous, non-ionic, and/or non-hydrated.

Abstract: A method of treating filler can include the steps of providing the filler, disposing silica within the filler so that a bulk density of the filler is approximately 24 to 26 pounds per cubic feet, forming a silane compound that includes silane and paraffin wax, and combining the silane compound with the filler.

Abstract: Polyamideimide coating compositions, including polyamideimide coating compositions suitable for magnet wire applications are described. Processes for preparing coating compositions, for coating articles such as magnet wire, and for curing coating compositions are also described.

Abstract: Insulation compositions for electric power cables having a polyolefin base polymer and an additive comprising either low molecular weight wax or polyethylene glycol (PEG) and optionally further comprising one or more hindered amine light stabilizers, amine antioxidants and other antioxidant blends are disclosed. Also disclosed are insulation compositions comprising a C2 to C8 alpha olefin in combination with a polyethylene homopolymer together with, optionally, one or more hindered amine light stabilizer and a liquid cresol antioxidant.

Abstract: The present invention provides insulation for a wire that comprises a main body configured to cover the wire where the main body has an inner surface that abuts the wire, an outer surface opposite the inner surface, and an insulation cross-sectional area defined between the inner and outer surfaces. A plurality of foamed sections are disposed in the insulation cross-sectional area of the main body. At least one solid section is disposed in the insulation cross-sectional area of the main body, wherein the plurality of foamed sections form at least 45% of the insulation cross-sectional area.

Abstract: The present invention relates to a method for making wire insulation that comprises the steps of providing a solid insulative material; adding a chemical foaming agent to at least one section of the solid insulative material; extruding the solid insulative material over at least one wire to create an insulated wire; and heating the insulated wire after extruding the solid insulative material and activating the chemical foaming agent in the at least one section of the solid insulative material to create at least one foamed section in the solid insulative material.

Abstract: The present invention provides a twisted pair of insulated wires that comprises a first wire that has a first insulation. The first insulation includes at least one foamed section and at least one unfoamed section. A second wire has a second insulation. The second insulation includes at least one foamed section and at least one unfoamed section. The at least one foamed section of the first insulation is spaced from and not adjacent to the at least one foamed section of the second insulation.

Abstract: The present invention relates generally to cables suitable for use in plenum applications. In particular, the present invention relates to coaxial cables suitable for use in plenum applications (which exhibit flame spread and smoke generation properties that comply with industry standards, e.g., UL 910 or NFPA 262) without compromising electrical performance. The cable has two or more layers of insulation where the inner layer is made of a material having a high melt flow index and the outer layer is made of a material having a low melt flow index.