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-1207NS | BYK-055 | RC | 25% | Excellent compatibility, very low shrinkage tendency. Particularly suitable for systems of medium and high polarity (UV-curable systems). Low influence on film transparency. | |
| ASTRA DF NS-1407NS | BYK-057，EFKA-2720, BYK A 501 | O / RC | 100% | Good compatibility. Particularly suitable for epoxy systems and unsaturated polyester systems. | |
| ASTRA DF NS-1507NS | BYK-A 501; BYK-A 555; Version of ASTRA-1407NS | O / RC | 100% | Good compatibility. Particularly suitable for epoxy systems and unsaturated polyester systems. | |
| ASTRA DF NS-1707NS | BYK-1790 | O / RC | 20% | Strong antifoam with low cratering tendency. Suitable for coil coating systems, epoxy systems. | |
| ASTRA DF NS-1807NS | BYK-1790 | O / RC | 100% | High efficiency. Low tendency to form craters. Particularly suitable for coil coating systems, epoxy and UV curing systems. | |
| ASTRA DF NS-2507NS | BYK-034 | WB | 20% | High efficiency, the additive should be introduced into the system at the dispersion stage. | |
| ASTRA DF NS-307NS | BYK-052; BYK A 555, BYK A 515, EFKA 2020, DC 3500 | O / RC | 3% | High efficiency. Suitable for high viscosity systems | |
| ASTRA DF NS-407NS | BYK-390 | O / RC | 1% | High efficiency. Suitable for high viscosity systems | |
| ASTRA DF NS-507NS | BYK-052; BYK A 555, BYK A 515, EFKA 2020, DC 3500 | O | 1% | Prevents foam formation during production and application. Does not adversely affect interlayer adhesion. | |
| ASTRA DF NS-807NS | BYK-A515; BYK-054 | O / RC | 100% | Good compatibility with resins. Particularly suitable for epoxy systems and unsaturated polyester systems. |
Need technical assistance?
Our team can help you select the right additive for your formulation.
Contact Technical Support