Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.

Thermoplastic polymers, for example fluoropolymers, are foamed by use of a solid formulation comprising thermoplastic polymer and manganese oxalate.

The invention pertains to a fluoropolymer composition [composition (C)] comprising:—at least one semi-crystalline polymer comprising recurring units derived from ethylene and at least one of chlorotrifluoroethylene (CTFE) and tetrafluoroethylene (TFE), said polymer having a heat of fusion of at most 35 J/g [polymer (A)]; and—from 0.05 to 15% by weight, based on weight of polymer (A), of at least one ethylene copolymer with at least one long chain a-olefin having a number of carbon atoms of 6 or more, and possessing a density of less than 0.900 g/cm3, as determined according to ASTM D792; to a method for its manufacture and to its use for manufacturing cables.

An electrowetting optical device is provided. The electrowetting optical device includes a first window, a second window, and a cavity disposed between the first window and the second window. The electrowetting optical device additionally includes a first liquid and a second liquid disposed within the cavity, the first liquid and the second liquid substantially immiscible with each other and having different refractive indices such that an interface between the first liquid and the second liquid defines a variable lens. The electrowetting optical device also includes a common electrode in electrical connection with the first liquid and a driving electrode disposed on a sidewall of the cavity and insulated from the first liquid and the second liquid by an insulating polymer dielectric layer. The insulating polymer dielectric layer may be formed using initiated chemical vapor deposition (iCVD).

A communications cable is provided that includes a pair of twisted pair of wires, each coated with a fluoropolymer insulator. The twisted pair of wires is configured to carry a differential signal, such as a differential data signal and/or a differential power signal. The fluoropolymers are highly effective insulators and significantly reduce both the effects of internal and external electromagnetic interference while maintaining low cable attenuation, even when operating within a temperature range of-40° C. to 150° C.

Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.

There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit, and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.5 to 12.2% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.5 to 1.4% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.8 to 4.0 g/10 min, and a number of —CF.sub.2H of more than 50 per 10.sup.6 main-chain carbon atoms.

There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of the hexafluoropropylene unit of 9.4 to 10.3% by mass with respect to the whole of the monomer units, a content of the perfluoro(propyl vinyl ether) unit of 1.6 to 2.9% by mass with respect to the whole of the monomer units, and a melt flow rate at 372° C. of 9.0 to 17.0 g/10 min.

There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit, and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 10.3 to 12.2% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 1.2 to 1.6% by mass with respect to the whole of the monomer units, and a melt flow rate at 372° C. of 13.0 to 17.0 g/10 min.

There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 4.8 to 6.2% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 17.0 to 23.0 g/10 min, and the number of functional groups of 50 or less per 10.sup.6 main-chain carbon atoms.