Process for preparing a composition for the surface of roads, ai

Details Process for preparing a composition for the surface of roads, ai Process for preparing a composition for the surface of roads, ai

1974-05-06

1976-04-27

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 285D, C08L 9100

Patent

active

039533905

ABSTRACT:
Process for preparing a composition for the surface of roads, airport runways, canals, dams and the like surfaces, comprising mineral granulates coated with 4-12% by weight with respect to the weight of the granulates, of a binder consisting essentially of 93-96% by weight of fluxed coal pitch or fluxed coal tar and 4-7% by weight of a polymer or copolymer of vinyl chloride. The polymer or copolymer is first mixed rapidly in a mixer in the form of a powder with the granulates previously heated to a temperature of 120.degree.-160.degree.C and the binder is thereafter introduced in the mixer in contact with the mixture thus obtained and the mixing of the composition is terminated in the conventional manner.

REFERENCES:
patent: 3549575 (1970-12-01), Payne et al.
patent: 3654217 (1972-04-01), Corri

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