Pat-Add DA 815 is a solvent-free dispersing additive for solvent-borne and solvent-free systems, including PVC plastisols, thermoplastics, and adhesives. It stabilizes organic and inorganic pigments—especially carbon blacks—reduces viscosity, improves color development, and lowers torque and filtration pressure. Ideal for PU polyol pastes and PVC applications, it also neutralizes acidic/neutral carbon black surfaces.