Fluoropolymer composition for oil pipe

a technology of fluoropolymer and composition, which is applied in the direction of transportation and packaging, mechanical equipment, coatings, etc., can solve the problems of lack of adhesion between the lining and the inability of mechanical restraint on the movement of the lining, and the separation of the lining from the interior surface of the vessel, so as to achieve better adhesion
US20050016610A1Inactive Publication Date: 2005-01-27EI DU PONT DE NEMOURS & CO
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
EI DU PONT DE NEMOURS & CO
Publication Date
2005-01-27
Estimated Expiration
Not applicable · inactive patent
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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 rotolinig the interior of the oil pipe.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention relates to fluoropolymer compositions and to the use of such compositions for rotolining of the interior surface of a hollow article.

[0003] 2. Description of Related Art

[0004] J. Scheirs, Modern Fluoropolymers, John Wiley & Sons (1997) describes the rotolining process, which involves the adding of sufficient fluoropolymer in powder form to a steel vessel to coat the interior surface of the vessel with the desired thickness of the fluoropolymer, followed by rotating the vessel in three dimensions in an oven, to melt the fluoropolymer, whereby the fluoropolymer covers the interior surface of the vessel and forms a seamless lining (p. 315). The resultant fluoropolymer lining protects the vessel from corrosive materials stored or handled by the vessel, by virtue of the chemical inertness of the fluoropolymer forming the lining and the lining being continuous with respect to the interior surface of the v...

Claims

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