BYK 151 is a wetting and dispersing additive that provides pigment stabilization in aqueous emulsion systems. BYK 151 is an alkylol ammonium salt of a polyfunctional polymer with anionic character. It helps to uniformly disperse pigments and fillers into water-based formulations. BYK 151 prevents pigment flocculation and settling, ensuring color consistency and long-term stability of products. Its use results in improved color strength, gloss and opacity. Formulations made with BYK 151 exhibit enhanced application properties and final appearance of dried films.