For various inorganic pigments and fillers, it has excellent viscosity-reducing and dispersing capabilities as well as increases gloss. It has a strong ability to prevent flocculation and back coarsening of the ground color paste, thereby greatly increasing the storage stability of the color paste. It is suitable for co-grinding and color separation grinding and can be widely used in SMC, BMC system to reduce viscosity. It is suitable for various polar systems, especially in medium and high polar systems. Meanwhile, it can significantly improve the wetting and dispersing ability of the base material for pigments and fillers, reduce the viscosity of the system, improve fluidity, and shorten the grinding and dispersing time. Its anchoring group is an acidic group, which make it will not react with an acid catalyst in a baking varnish or coil coating system.