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AssigneeE. I. Du Pont de Nemours and Company
InventorsLaurence McKeen, Pidatala Mohan, Steven Mestemacher, Kimberly Farnsworth, W. Obal
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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.
A pipe for conveying flowable media comprising a fluoropolymer lining adhered to the interior surface of the pipe, and a lining formed on the exterior surface of the pipe.
Process for forming a nonstick surface on the interior surface of a pipe, comprising (a) adhering a fluoropolymer lining to the interior surface of the pipe, and (b) forming a lining to the exterior of the pipe.
Dependencies are inferred from the claim text.