Abstract: Articles made from blends of hydrofluorocarbon polymer such as copolymer of ethylene and tetrafluoroethylene, with boron nitride show improved scrape abrasion resistance.

Abstract: The present invention relates to a process for adhering a preformed polymer liner to the surface of a pipe by induction heating the pipe. The liner may comprise a fluoropolymer. The liner may be applied either to the interior surface or the exterior surface of the pipe. The invention is particularly useful for adhering a liner to the interior surface of an oil well pipe. Thus with the induction heating process of present invention, it is possible to adhere a preformed liner to the interior surface of an oil well pipe which is capable of reducing-to-eliminating the deposition (buildup) of one or more of the asphaltenes, paraffin wax, and inorganic scale on the interior surface of the oil pipe. Preferably, this reduction is at least 40%, preferably at least 50% or more, for at least one of these materials as compared to the unlined oil pipe, and more preferably at least 40% for all of them.

Abstract: The present invention relates to a preformed liner adhered to the surface of a pipe, and in particular, an oil well pipe, by an adhesive. The liner comprises a polymer, preferably a fluoropolymer. The present invention also relates to a process for adhering the preformed liner to the interior surface of a pipe, and in particular by applying adhesive to the preformed liner. The liner is preferably treated prior to applying the adhesive. A suitable treatment includes etching. The pipe is heated to adhere the preformed liner to the interior surface of the pipe, without buckling the liner. The interior surface of the preformed fluoropolymer liner reduces the deposition of at least one of 1) asphaltenes, 2) paraffin wax, and 3) inorganic scale by at least 40% as compared to the interior surface of the oil pipe without the preformed liner being present.

Abstract: The present invention relates to a pipe, especially an oil pipe, having a lining comprising a fluoropolymer adhered to its interior surface and a lining formed on its exterior surface. The interior and/or exterior lining may comprise a primer layer comprising a fluoropolymer, and preferably a perfluoropolymer and an overcoat or a preformed film adhered to the primer layer. Either the overcoat or the preformed liner also comprises a fluoropolymer, and preferably a perfluoropolymer. The surface of the lining facing the flowable media, such as oil, may be a pure perfluoropolymer to provide a particularly good non-stick surface for the oil.

Abstract: The present invention relates to pipes that convey any flowable medium, such as chemicals, food and in particular, oil and gas, and more particularly to a system of pipes having different coatings or linings for the interior and exterior surfaces of such pipes, depending on the environment in which the pipes are used. The pipes may be coated with different materials, which may be of different thicknesses, with various configurations of coatings or linings. Such coating may be done on the interior and/or the exterior of the pipes.

Abstract: The present invention relates to a vessel, in particular a pipe, especially an oil pipe, having a preformed film adhered onto the interior surface of the pipe, the interior surface of the preformed film reducing the deposition of at least one of asphaltenes, paraffin wax, and inorganic scale by at least 40% as compared to the interior surface of said oil pipe without said preformed film being present. In a preferred embodiment, the preformed film is adhered to the interior surface of the pipe with a primer layer with an optional barrier layer between the primer layer and the preformed film.

Abstract: Articles made from blends of hydrofluorocarbon polymer such as copolymer of ethylene and tetrafluoroethylene, with boron nitride show improved scrape abrasion resistance.