Process for obtaining bitumens containing at least one elastomer and products obtained

摘要

This process for obtaining bitumens containing at least one elastomer comprises two steps according to which, in the first step, a homogeneous dispersion is prepared consisting of elastomer and of selected bitumen containing a low percentage of saturated products and of asphaltenes by blending the said elastomer and the said bitumen until a master solution containing a high concentration of elastomer is obtained and, in the second step, the said master solution is diluted with a roadmaking bitumen until a homogeneous product is obtained in the form of an elastomeric bitumen.