Anionic emulsified asphalt

Asphalt emulsions are used in road paving for the production of a smooth, water-repellant surface. First, an asphalt O/W emulsion is formulated, which has sufficiently low viscosity to be easy to handle and apply, and which has sufficient stability to survive transportation, brief periods of storage, and the application process itself. The emulsion needs to be able to shear thin during application, and then break quickly when it contacts the aggregate. The asphalt emulsions are usually 40-70% bitumen and stabilized either by natural naphthenic surfactants released by treatment with alkali (for a somewhat similar situation involving bitumen processing see also [64]), or else by the addition of anionic or cationic surfactant [106]. Emulsified asphalt can be applied to gravel or rock even when wet [1,20,105,106]. 

Ionic Nature Anionic Uses Asphalt emulsifier Properties Liq. 35-40% cone. 

Emulsifiers and Stabilizers Both anionic (INDULIN C) and cationic (INDULIN W-l) derivatives of non-sulfonated kraft lignin are commonly used as stabilizers for making asphalt, wax, or oil-in-water emulsions. 

The simplest reaction ofTOFA is the formation of soaps upon treatment with bases. Tall oil fatty acid soaps, such as ammonium tallate, potassium taUate, and sodium tallate are water soluble. The low proportion of saturated fatty acids allows them to be used in numerous cosmetic and personal care applications, functioning as an emulsifier or surfactant. The same applies for many industrial applications such as bitumen emulsions commonly used in roadway construction and maintenance. Asphalt emulsions are classified based on their ionic charge anionic, cationic, and nonionic. Anionic emulsions... 

Chem. Descrip. Lignosulfonate Ionic Nature Anionic Uses Emulsifier for asphalt emulsions Properties Powd., liq. 45-100% cone. 

Uses Corrosion inhibitor for ferrous metals salts act as antlstat, emulsifier, wetting agent, dispersant, and detergent demulsification of anionic emulsions ore flotation leather and textile softening degreasing pickling operations asphalt bonding... 

---