Method for preparing a bitumen-polymer mixture

Details Method for preparing a bitumen-polymer mixture Method for preparing a bitumen-polymer mixture

C - Chemistry, Metallurgy

08

J

C08J 3/00 (2006.01) C08J 3/22 (2006.01)

Patent

CA 2570163

The invention concerns a method which consists in preparing by extrusion a master batch containing bitumen and a high concentration of a polymer such as a styrene-butadiene-styrene copolymer, which is then diluted into the bitumen to produce a bituminous binder. The invention is useful for making bituminous binders for spraying or embedding.

On prépare par extrusion un mélange maître contenant du bitume et une forte concentration d'un polymère tel qu'un copolymère styrène-butadiène-styrène, qu'on dilue ensuite dans le bitume pour fabriquer un liant bitumineux. Application à la fabrication de liants bitumineux pour répandage ou enrobage.

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