Coated pipes for harsh environments

Details Coated pipes for harsh environments Coated pipes for harsh environments

2011-01-18

2011-01-18

Brinson, Patrick F (Department: 3754)

Pipes and tubular conduits

Flexible

Distinct layers

C138S140000, C138S146000, C138SDIG010

Reexamination Certificate

active

07870877

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.

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J. Scheirs, Modern Fluoropolymers, John Wiley & Sons (1997) p. 315.

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