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US Patent 7537815 Fluoropolymer composition for oil pipe

Patent 7537815 was granted and assigned to E.I. Du Pont De Nemours And Company on May, 2009 by the United States Patent and Trademark Office.

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Patent abstract

The present invention relates to a composition of tetrafluoroethylene/perfluoro(ethyl vinyl ether) copolymer particles and metal powder which enables the composition to the used for rotolining an interior surface of a hollow article, wherein the resultant lining adheres to such surface. The invention further relates to oil pipe having its interior surface rotolined with fluoropolymer, the rotolining containing an effective amount of metal powder to cause the rotolining to adhere to said interior surface and a process for rotolining the interior of the oil pipe.

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