Stabilized bituminous composition based on polymer in-situ...

Details Stabilized bituminous composition based on polymer in-situ... Stabilized bituminous composition based on polymer in-situ...

C - Chemistry, Metallurgy

08

L

C08L 95/00 (2006.01)

Patent

CA 2246415

Normally incompatible styrenic polymers are stably incorporated into bitumen by using an elastomeric triblock copolymer comprising polystyrene segments which is solubilized or compatibilized in the bituminous phase. The elastomeric triblock copolymer incorporated into the continuous bituminous phase provides polystyrene domains which are dispersed throughout the bitumen or a receiving unit which stabilize the particulate polystyrene against separation from the bitumen.

Il est possible d'incorporer de manière stable au bitume des polymères styréniques normalement incompatibles en recourant à un copolymère élastomère à trois blocs solubilisé ou compatibilisé dans la phase bitumineuse. Ledit copolymère, une fois incorporé à la phase bitumineuse continue présente des domaines polystyréniques dispersés dans le bitume, ou une unité réceptrice qui stabilise le polystyrène particulaire et l'empêche de se dissocier du bitume.

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