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US 4,052,219 AGranted
Pipe coating composition
AssigneePhillips Petroleum Company
InventorsOren L. Marrs, Robert E. Reusser, Dale O. Tieszen
Life of this patent
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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 fiber.
Claims5
A composition of matter consisting essentially of a mixture 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 a synthetic organic fiber selected from the group consisting of polyester fibers, polyamide fibers, polyfluorocarbon fibers and poly(arylene sulfide) fibers.
1 more element
Dependencies are inferred from the claim text.