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-1004 | Tego-900，Elementis-6800 | Solvent-based / Radiation-curable | 100% | High efficiency, especially suitable for high-viscosity systems, inhibits foam formation, extinguishes foam, eliminates microfoam. For epoxy floors and printing inks. | |
| 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-1104 | KS-66 | Solvent-based / Radiation-curable | 100% | High efficiency, especially suitable for high viscosity systems, inhibits foam formation, extinguishes foam, eliminates microfoam. For epoxy floors and printing inks. | |
| ASTRA DF-1204 | — | Water-based | 25% | Low crater tendency. High defoaming rate. Easy to incorporate into the system. | |
| 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-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-2604 | Tego-904W | Water-based | 100% | Strong silicone antifoam, should be added at the dispersion stage. | |
| ASTRA DF-404 | Elementis-5300, DEUCHEM 5300, EFKA 2035 | Solvent-based | 1% | Excellent compatibility, good foam inhibition and destruction properties. Can be used at all stages of paint and varnish production and application. | |
| ASTRA DF-604 | BYK-088 | Solvent-based / Radiation-curable | 3% | Good compatibility, high defoaming rate, especially suitable for low viscosity epoxy systems. | |
| ASTRA DF-704 | — | Solvent-based / Radiation-curable | 100% | High efficiency, especially suitable for high viscosity systems, inhibits foam formation, extinguishes foam, eliminates microfoam. For epoxy semi-printing inks. |
Need technical assistance?
Our team can help you select the right additive for your formulation.
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