ASTRA DF NS®
Non-Silicone Defoamers
Non-silicone defoamers for processes where silicone is undesirable (food packaging, auto coatings, electronics). Fast foam destruction without silicone contamination risk.
When do we need silicone-free defoamers?
In food packaging, automotive recoat, electronics and many high-performance applications silicone contamination is unacceptable. Non-silicone defoamers from ASTRA control foam without compromising recoatability, adhesion or transparency.
Key Benefits
- Silicone-Free formula — safe for recoat and overspray
- No effect on inter-coat adhesion
- Food packaging compliant
- Suitable for clear and transparent coatings
- Effective in waterborne and solvent systems
- Good long-term stability
Impact on Coating Performance
For sensitive industries where silicone defects are a deal-breaker, ASTRA DF NS provides reliable defoaming without risk. Perfect for automotive refinish, can coatings and food contact applications.
O – organosoluble, WB – water-based, RC – radiation-curable
Product Catalog
Download TDS| Active % | Feature | TDS | |||
|---|---|---|---|---|---|
| ASTRA DF NS-1707NS | BYK-1790 | Solvent-based / Radiation-curable | 20% | Strong antifoam with low cratering tendency. Suitable for coil coating systems, epoxy systems. | |
| ASTRA DF NS-1807NS | BYK-1790 | Solvent-based / Radiation-curable | 100% | High efficiency. Low tendency to form craters. Particularly suitable for coil coating systems, epoxy and UV curing systems. | |
| ASTRA DF NS-2707NS | — | Solvent-based / Water-based | 100% | Highly effective, designed for water-based systems. Does not affect gloss or overcoating. | |
| ASTRA DF NS-2807NS | — | Solvent-based / Water-based | 100% | Strong silicone-free defoamer, prevents foam formation. Does not affect the appearance of the coating. | |
| ASTRA DF NS-707NS | AC-300 | Solvent-based / Radiation-curable | 100% | Suitable for all organosoluble systems, high efficiency of defoaming. Suitable for thick paintwork and high-viscosity systems. For zinc primers, polyurethane, epoxy systems. | |
| ASTRA DF NS-807NS | BYK-A515; BYK-054 | Solvent-based / Radiation-curable | 100% | Good compatibility with resins. Particularly suitable for epoxy systems and unsaturated polyester systems. | |
| ASTRA DF NS-907NS | — | Solvent-based / Radiation-curable | 50% | Suitable for all organosoluble systems, high efficiency of defoaming. Suitable for thick paintwork and high-viscosity systems. For zinc primers, polyurethane, epoxy systems. |
Need technical assistance?
Our team can help you select the right additive for your formulation.
Contact Technical Support