Anjeka-6402A, a One-Stop Solution for Dispersion Challenges in High-Solid Systems

With increasingly stringent environmental regulations, high-solid coatings have become one of the mainstream directions for the green transformation of the coatings industry. However, the reduction in solvent usage is a double-edged sword. While lowering VOC emissions, it also brings a series of technical challenges such as a sharp increase in formulation viscosity, difficulty in dispersing pigments and fillers, susceptibility to settlement during storage, and challenges in application leveling. How can we “lighten the load” for high-solid systems and endow them with excellent stability without sacrificing performance? Anjeka-6402A dispersant from Anjeka is precisely the high-performance solution born to meet these challenges.

The core advantage of high-solid coatings lies in the significant reduction of VOC emissions, but the technical path to achieve this is fraught with challenges. The decrease in the proportion of solvent within the system means stronger interaction forces between resin and pigment/filler particles, directly leading to high grinding viscosity, high energy consumption, and low production efficiency. Simultaneously, the lack of sufficient solvent medium for suspension stabilization makes pigments and fillers more prone to hard settlement and re-coarsening during storage, affecting product shelf life and final film performance. Therefore, an ideal dispersant for high-solid coatings must play the dual roles of “viscosity reducer” and “stabilizer,” which is the design purpose of Anjeka-6402A.

Anjeka-6402A is a specially designed hyperbranched polymer dispersant. Its unique molecular structure can efficiently anchor onto the surfaces of inorganic pigments and fillers, effectively breaking down pigment agglomerates through powerful steric hindrance effects, achieving ultra-fine dispersion. This mechanism directly brings two core values:

• Powerful Viscosity Reduction, Boosting Efficiency: Through deflocculation, it significantly reduces millbase viscosity and improves system flowability. Experimental data confirms that in single-component silicone PU paste, the viscosity reduction effect of Anjeka-6402A is significantly better than the control group and other comparative products, with initial viscosity reduced by approximately 30%. In polyester polyol calcium carbonate filler paste, its viscosity reduction effect can even lower viscosity by nearly 50%. This means higher pigment loading, shorter grinding time, and lower energy consumption.
• Excellent Anti-Settling, Worry-Free Storage: The powerful spatial stabilization effect can prevent re-flocculation and settlement of dispersed pigment/filler particles over the long term. In various high-loading filler paste tests for polyether and polyester polyols, pastes using Anjeka-6402A showed “no stratification, no precipitation” after 24 hours of thermal storage at 50°C, with minimal viscosity changes, demonstrating excellent storage stability. It also showed good stability in thermal storage tests of epoxy white paste.

True versatility stems from broad system compatibility. The success of Anjeka-6402A is not limited to a single resin system:

• Epoxy Floor Coatings: As a recommended dispersant suitable for high-solid, solvent-free epoxy floor coatings, it can effectively address the dispersion challenges brought by the high viscosity and high film build of such systems, ensuring the long-term storage stability and application properties of floor coatings.
• Polyurethane Systems: In both single-component and two-component polyurethane systems, Anjeka-6402A is explicitly recommended for viscosity reduction and anti-settling of inorganic pigments and fillers. Its excellent viscosity reduction performance in single-component silicone PU has been experimentally verified.
• Polyol Filler Pastes: In high-loading filler pastes prepared from polyurethane raw materials—polyether and polyester polyols—Anjeka-6402A demonstrates comprehensive and excellent viscosity reduction and stabilization effects on various fillers such as calcium carbonate, barium sulfate, and talc, showing wide applicability.
• Anti-Flooding/Floating: In complex systems like acrylic industrial paints, Anjeka-6402A can synergize with other additives (e.g., Anjeka-6161A) to effectively solve flooding/floating problems in multi-pigment systems, achieving excellent results with no stratification after 24 hours of thermal storage at 50°C.

Precise Addition: It is recommended to thoroughly mix Anjeka-6402A with the resin or polyol base material before grinding, then add pigments or fillers to ensure its full wetting and dispersing effect.

Dosage Reference: For inorganic pigments and fillers, it is suggested to start with an addition level of 0.2%-2% based on the pigment/filler weight. For example, in polyol filler pastes, the recommended dosage for calcium carbonate is approximately 0.24% of the filler weight. The specific optimal dosage should be determined through gradient experiments.

Precautions: Ensure the product is fully stirred before use. If stratification or cloudiness occurs due to low storage temperature, heat it to 30-40°C and stir well before use.

Facing the technical high ground of high-solid coatings, choosing an efficient dispersant is key to success. Anjeka-6402A, with its excellent viscosity reduction capability, outstanding storage stability, and broad system applicability, provides a reliable solution for your high-solid epoxy, polyurethane, and polyol systems. It helps you enhance product performance, optimize production efficiency, and easily comply with environmental regulations.

Contact us now to obtain detailed technical data and free samples of Anjeka-6402A for your specific high-solid system. Let your formulation break through the "viscosity wall" and achieve a win-win of stability and efficiency!