In the production of coatings, inks, and fine chemicals, slurry stability directly determines the performance and appearance of the final product. Common pain points include: pigment particles that tend to agglomerate, causing reduced tinting strength; settling or re-agglomeration of the slurry during storage, affecting production continuity; and problems such as floating, flooding, and uneven gloss on the coating surface.
Chemi Tech polymeric dispersants use a unique block-copolymer structure that anchors precisely onto particle surfaces, creating steric hindrance and establishing a long-lasting, stable barrier between particles. This mechanism effectively overcomes agglomeration caused by van der Waals forces and ensures particles are uniformly dispersed throughout the system.
For specific needs, we recommend the following steps to select the right dispersant. First, analyze the surface properties of the dispersed particles and the polarity of the system. Second, run laboratory trials to evaluate initial dispersion performance and viscosity changes. Third, carry out heat-storage and freeze-thaw cycle stability tests. Fourth, determine the optimal dosage based on final application performance such as gloss and transparency.
Case study: an industrial coating customer encountered re-agglomeration after one week of storage and low grinding efficiency when producing a high-solids black paste. By adopting the Chemi Tech-recommended CT-520 series polymeric dispersant with strong anchoring groups, the fineness decreased significantly within the same grinding time. After four weeks of storage at 50 degrees Celsius, the viscosity change rate was less than 5%, and the product was successfully applied to subsequent production lines, greatly improving batch-to-batch consistency.
Chemi Tech is committed to providing customized dispersion solutions. Our technical support team can assist customers through the entire process, from problem diagnosis to product optimization, helping to enhance product competitiveness.