ASTRA DF®
Silicone Defoamers
Silicone defoamers for effective foam control in various industrial processes. Fast foam destruction, good compatibility, minimal impact on coating clarity.
Why use silicone defoamers?
Foam is one of the most common defects in industrial coatings, leading to pinholes, craters and weak films. Silicone defoamers rapidly destroy foam bubbles thanks to ultra-low surface tension. They work at very low dosages and remain effective across long shelf life.
Key Benefits
- Rapid Foam Destruction — instant defoaming on application
- Low Dosage — economical use 0.1-1%
- Persistent Effect — works during storage and application
- Clarity Preservation — minimal impact on transparent coatings
- Compatible with epoxy, PU, alkyd, polyester systems
- No surface defects when properly dosed
Impact on Coating Performance
ASTRA DF defoamers deliver flawless film formation in high-build coatings, epoxy floors and printing inks. Their broad compatibility reduces formulation development time and protects coating performance.
O – organosoluble, RC – radiation-curable
Product Catalog
Download TDS| Active % | Feature | TDS | |||
|---|---|---|---|---|---|
| ASTRA DF-104 | BYK-A530; BYK 330 | Solvent-based / Radiation-curable | 7% | Good conformity, high defoaming rate. Especially suitable for low viscosity epoxy systems. | |
| ASTRA DF-1204 | — | Water-based | 25% | Low crater tendency. High defoaming rate. Easy to incorporate into the system. | |
| ASTRA DF-1704 | Tego-825（Evonik） | Water-based | 20% | Low tendency to form craters. High defoaming rate. Effective even at low dosages. | |
| ASTRA DF-1804 | — | Solvent-based / Radiation-curable | 100% | High efficiency, especially suitable for high-viscosity systems, inhibits the formation of foam, extinguishes foam, eliminates microfoam. For epoxy floors and printing inks. | |
| ASTRA DF-1904 | BYK-019 | Water-based / Radiation-curable | 60% | Highly effective silicone oil type defoamer. Particularly suitable for high viscosity systems, eliminates microfoam. Must be added at the dispersion stage. | |
| ASTRA DF-2104 | Tego-3062（Evonik） | Solvent-based / Water-based / Radiation-curable | 100% | High defoaming efficiency even at low dosages. Should be introduced into the system at the dispersion stage. | |
| ASTRA DF-2404 | Tego-901W | Water-based | 100% | High defoaming efficiency even at low dosages. Low tendency to form craters. | |
| ASTRA DF-2604 | Tego-904W | Water-based | 100% | Strong silicone antifoam, should be added at the dispersion stage. | |
| ASTRA DF-2704 | Agitan 731 | Water-based | 100% | High efficiency of defoaming even at low dosages. Used in adhesive systems, wastewater treatment. | |
| ASTRA DF-2804 | Tego 8050 | Water-based | 100% | High efficiency of foam suppression even at low dosages. Used in water-based industrial paints and varnishes, paints for wood. |
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