Process for the preparation of an aqueous emulsion composition of asphalt-polyurethane

摘要: Process for the preparation of an aqueous emulsion composition bitumen-polyurethane A B S T R C The process according to invention is characterized by following stages:(A) bituminous made starting from (a) a prepared adding, at temperature 100 150°C, 20 95 parts bitumen 5 80 weight poly-urethane extender and (b) phase obtained solution in water 1 20% emulsifier chosen polyamine hydrochloride, amido-amine hydrochloride quaternary ammonium salt, then (a), taken 120 emulsified with (b), 40 80°C;(8) polyisocyanate mixing, under strong agitation, 50 organic up water; (C) emulsions (A) (B) are mixed. They form, reticulation ambient temperature, polyurethane mixture. Use cold paints, coatings, grouts surfacings.