Acronal S 400 Styrene/acrylic copolymer BASF Acrylic Resins >> Styrene/ acrylic copolymer >> Emulsions/ Dispersion Coatings >> Waterborne Architectural / Decorative water Acronal S 400 is an aqueous styrene acrylic copolymer dispersion, which is designed to modify hydraulic binders (Portland cement). Acronal S 400 can also be used to produce flexible coatings, as well as flexible and wa ter-resistant two-component mortars. Acronal S 400 is ideal for producing crack-filling systems and flexible cementitious coatings for walls. In addition to being compatible with hydraulic binders, Acronal S 400 demo nstr ates w ater-tightness and impermeability, as well as good adhesion to old surfaces. Acronal S 400 also improves freeze/thaw resistance of Portland cement mixtures. Flexibility, elasticity, and elongation also improve in Acronal S 400 modified Portland cement mixtures. High solids, flexible resin with cement compatibility High solids content Cement compatibility Improved adhesion to cementitious coatings Flexibility with cement tacky surface good resistance to aging good resistance to light Aqueous, high solids, styrene acrylic copolymer dispersion. Used to produce flexible cementitious coatings for walls. Offers compatibility with hydraulic binders, water-tightness, impermeability, and good adhesion to old surfaces. Improves freeze/thaw resistance, flexibility, elasticity, and elongation. Offers tacky surface and good resistance to aging and light.