Asphalt and rubber comprising composition

Details Asphalt and rubber comprising composition Asphalt and rubber comprising composition

1977-12-23

1979-06-19

Dixon, Jr., William R.

Pipes and tubular conduits

Distinct layers

Coated

138177, 427374C, 427385R, 428 36, F16L 914, B05D 302

Patent

active

041583710

ABSTRACT:
A pipe coating composition is provided having good crack resistance properties that consists essentially of about 50 to 70 wt. % mineral aggregate, about 15 to 35 wt. % finely divided mineral filler, about 5 to 20 wt. % asphalt, about 0.05 to 7 wt. % of a rubbery radial teleblock copolymer, about 0 to 7 wt. % of an oil, and about 0 to 0.5 wt. % of a fibrous material. Further more, the crack resistance of a pipe coating composition is dramatically improved by using an asphalt rubber composition in which the rubber is an epoxy-coupled radial teleblock copolymer as compared to a silicon tetrahalide-coupled radial teleblock copolymer of essentially the same structure.

REFERENCES:
patent: 4028292 (1977-06-01), Korpman
patent: 4073760 (1978-02-01), Harris et al.

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