Process for manufacturing asphalt

Details Process for manufacturing asphalt Process for manufacturing asphalt

C - Chemistry, Metallurgy

08

K

C08K 3/06 (2006.01) C08K 5/20 (2006.01) C08L 95/00 (2006.01) C10C 3/00 (2006.01)

Patent

CA 2720391

A process for manufacturing asphalt is disclosed. The process comprises the steps of: (i) heating bitumen; (ii) heating aggregate; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form asphalt. From 10 to 200 wt% of sulphur, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii) and from 0.1 to 20 wt% of a compound of formula A, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii). R1 and R2 are independently chosen from C6-C30 alkyl or alkenyl.

L'invention porte sur un procédé de fabrication d'asphalte qui consiste à: (i) chauffer du bitume; (ii) chauffer un agrégat; et (iii) mélanger le bitume chaud à l'agrégat chaud dans une unité de mélange afin de former l'asphalte. On ajoute, au cours de l'une des étapes (i), (ii) ou (iii) au moins, de 10 à 200 % en poids de soufre par rapport au poids du bitume, et de 0,1 à 20 % en poids d'un composé de la formule A par rapport au poids du bitume. R1 et R2 sont choisis indépendamment entre C6-C30 alkyle ou alcényle.

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