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 | Samples | |||
|---|---|---|---|---|---|---|
| ASTRA DISP-7106 | Dispex AA 4135, Dispex 4145 | Water-based | 40% | Sodium polyacrylate based dispersant, designed for inorganic pigments and fillers. | ||
| ASTRA DISP-7206 | Dispex AA 4030 | Water-based | 40% | Dispersant based on ammonium polyacrylate, intended for inorganic pigments and fillers. | ||
| ASTRA DISP-7306 | SN-5040 | Water-based | 30% | Dispersant for inorganic pigments, does not reduce moisture resistance and improves frost resistance. |
Articles about ASTRA DISP®
Viscosity Drift in Paints: Causes, Testing and Control
Viscosity Drift in Paints: Causes, Testing and Control ! Technician lifts thick paint with spatula Viscosity drift is the change in a coating's consistency between the end of production and the moment of application.
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TSCA Compliance for Additives: A Formulator's Guide
TSCA Compliance for Additives: A Formulator's Guide ! Formulator reviewing an additive compliance file TSCA compliance for an additive comes down to one determination made before the first kilogram is manufactured or imported: whether the chemical substance is on the TSCA Chemical Substance Inventor…
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Additive Supplier Collaboration: 2–3 Partners, Faster Formulation
Additive Supplier Collaboration: 2–3 Partners, Faster Formulation ! Formulation scientists reviewing an additive trial sample Collaborating with additive suppliers moves procurement from transactional buying to joint formulation and faster product improvements.
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