ASTRA DISP®
Dispersants
Dispersants for uniform distribution of solid pigments in liquid binders. Prevent flocculation, gloss loss, color shift, separation, sedimentation, and flow problems.
Why do we use dispersing additives?
The use of wetting and dispersing additives is crucial in the production of pigmented coatings. This is due to the need for a uniform distribution of solid pigments within the liquid binder solution. If the pigment grinding process is not optimized, various defects can occur, such as flocculation, reduced gloss, color shift, separation, Benard cells formation, and settling. This can also have an impact on the flow properties of the coating system, leading to issues like sagging and leveling.
Key Benefits
- Uniform Pigment Distribution — ensures pigments are evenly distributed throughout the binder
- Prevention of Flocculation — pigments stay separate, providing consistent color
- Enhanced Gloss — proper dispersion preserves high gloss levels
- No Color Shift — accurate color reproduction
- Prevention of Separation — long-term storage stability
- No Benard Cells — eliminates hexagonal patterns on coating surface
- Improved Flow and Leveling — eliminates sagging and poor leveling
Impact on Coating Performance
Using dispersing additives not only improves the visual and physical properties of coatings but also enhances their durability and longevity. A well-dispersed pigment system contributes to a more stable, vibrant, and defect-free final product, making it essential for industries where high-quality finishes are required.
P – organosoluble systems, B – water-based systems, UV – radiation-curable systems
Product Catalog
Download TDS| Active % | Feature | TDS | |||
|---|---|---|---|---|---|
| ASTRA DISP-1906 | BYK-9076 | Solvent-based / Water-based / UV-curable | 100% | Good ability to wet pigments. Reduces the viscosity of the system, allows to increase the pigment content in the paste. Provides stability during storage. Developed for UV-curable systems. | |
| ASTRA DISP-3506 | DISPERBYK-111 | Solvent-based / UV-curable | 100% | High molecular weight dispersant. Particularly suitable for inorganic pigments and fillers. Suitable for coil coating systems. Provides storage stability. | |
| ASTRA DISP-406 | BYK W 940; BYK-P104S | Solvent-based | 50% | Reduces the viscosity of the system, allows to increase the pigment content in the pigment paste. Prevents uneven distribution of pigments in the film. | |
| ASTRA DISP-506 | BYK W 940; BYK-P104S | Solvent-based | 50% | Reduces the viscosity of the system, allows to increase the pigment content in the pigment paste. Prevents uneven distribution of pigments in the film. | |
| ASTRA DISP-5606 | DISPERBYK 2152; DISPERBYK-2013 | Solvent-based / UV-curable | 100% | The polymer has a star-shaped structure, excellently wets organic and inorganic pigments. Reduces the viscosity of the system. Particularly suitable for medium polarity systems and UV-curable systems. | |
| ASTRA DISP-5706 | DISPERBYK-2013 | Solvent-based / UV-curable | 100% | The polymer has a star-shaped structure, excellently wets organic and inorganic pigments. Reduces the viscosity of the system. Particularly suitable for medium polarity systems and UV-curable systems. | |
| ASTRA DISP-6506 | OMG-0451; BYK-9076 | Solvent-based / Water-based / UV-curable | 100% | Suitable for water and solvent-based systems. Reduces viscosity, improves gloss, effective in dispersing soot. |
Need technical assistance?
Our team can help you select the right additive for your formulation.
Contact Technical Support