US Patent 7870877 Coated pipes for harsh environments
Patent 7870877 was granted and assigned to E.I. Du Pont De Nemours And Company on January, 2011 by the United States Patent and Trademark Office.
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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.
US Patent 07870877 Coated pipes for harsh environments US Patent 7870877 Coated pipes for harsh environments
US Patent 07870877 Coated pipes for harsh environments
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