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US 4,138,516 AGranted
Pipe coating composition
AssigneePhillips Petroleum Company
InventorsOren L. Marrs, Robert E. Reusser, Dale O. Tieszen
Life of this patent
Estimating the term…
Abstract
A pipe coating composition consisting essentially of a binder, mineral aggregates, a finely divided mineral filler and synthetic organic fibers exhibits improved cracking time as compared to a pipe coating composition containing glass fibers instead of the organic fibers.
Claims9
A coated pipe consisting essentially of a metal pipe having an exterior coating covering essentially the entire external surface of the pipe, said coating consisting essentially of
- about 50 to 70 wt. % of a mineral aggregate,
- about 5 to 20 wt. % of asphalt,
- about 15 to 35 wt. % of a finely divided mineral filler, and
- about 0.05 to 0.5 wt. % of synthetic organic fibers selected from the group consisting of polyester fibers, polyamide fibers, polyfluorocarbon fibers and poly(arylene sulfide) fibers.
1 more element
A process for producing a coated pipe which comprises applying a layer of a composition consisting essentially of
- about 50 to 70 wt. % of a mineral aggregate,
- about 5 to 20 wt. % of asphalt,
- about 15 to 35 wt. % of a finely divided mineral filler, and
- about 0.05 to 0.5 wt. % of synthetic organic fibers selected from the group consisting of polyester fibers, polyamide fibers, polyfluorocarbon fibers and poly(arylene sulfide) fibers
- onto the external surface of a pipe.
2 more elements
Dependencies are inferred from the claim text.