COMPOSITION OF SURFACTANTS FOR PREPARATION OF BITUMEN ROADWAY COVERING Russian patent published in 2004 - IPC

FIELD: preparation of bitumen emulsions for roadway covering. SUBSTANCE: proposed composition includes amido-amines, imidazolines and nonionogenous surfactants at the following relationship of components, mass-%:amido-amines, 98-2.0; imidazolines, 1.8-97.9; nonionogenous surfactant, 0.2-0.1. Amido-amines are obtained through condensation reaction of carboxylic acids and polyethylene polyamines at equimolar ratio in organic solvent medium at temperature of 120-170 C. Alkyl imidazolines are obtained at condensation of polyethylene polyamine with carboxylic acids at equimolar ratio in organic solvent medium at temperature of 120-250 C. Used as nonionogenous surfactant are hydroxyethylated alkyl phenols. EFFECT: enhanced adhesion of bitumen to mineral filler. 2 cl, 1 tbl, 6 ex