Recently, coating industry technicians have clarified a counterintuitive storage problem of water-based color pastes. Many water-based color pastes remain stable without hard sediment or flocculation after 7 to 15 days of thermal storage at 50℃. However, hard sediment and lumps frequently emerge at the bottom after being stored at room temperature for 1 to 3 months, perplexing practitioners for a long time. Relevant research shows thermal storage mainly inspects the chemical stability of the system. High temperature intensifies particle movement and stretches dispersant chains, leading to loose sediment that can be easily re-dispersed. At room temperature, particles lack kinetic energy. Affected by van der Waals force and hydrogen bonds, they gradually flocculate and are compacted by gravity, forming irreversible hard sediment. This issue is more obvious in color pastes with inorganic pigments. Industry experts mention that simply increasing viscosity cannot solve the problem fundamentally. Optimizing dispersant adsorption capacity and building a reversible soft sedimentation system are effective solutions to produce high-quality color pastes with good re-dispersibility. https://www.tiktok.com/@mia_iota/video/7597717976720149782