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 | Samples | |||
|---|---|---|---|---|---|---|
| ASTRA DF-1604 | Tego-810 | Water-based | 100% | High foam suppression efficiency even at low dosages. | ||
| ASTRA DF-204 | DISPERBYK-141, EFKA 2038, TEGO 962 | Solvent-based | 3% | High efficiency, good compatibility. Low tendency for paint shrinkage. | ||
| ASTRA DF-2204 | Tego-1488（Evonik） | Water-based | 20% | High defoaming efficiency even at low dosages. Low tendency to form craters. | ||
| ASTRA DF-2304 | Tego-825 | Water-based | 20% | High defoaming efficiency even at low dosages. Low tendency to form craters. | ||
| ASTRA DF-2504 | Tego-902W | Water-based | 20% | High efficiency of foam suppression Does not have a negative impact on the properties of paintwork. Quickly suppresses foam. | ||
| ASTRA DF-304 | DISPERBYK-141, EFKA 2038, TEGO 962 | Solvent-based | 3% | Effective at the production stage, prevents cratering, good compatibility, low tendency to shrinkage of paintwork. Does not affect gloss. |
Articles about ASTRA DF®
Formulators: Process First Foam Control for Mixing (Save up to 8%)
Formulators: Process First Foam Control for Mixing (Save up to 8%) ! Foam control mixing process title card Foam during mixing is typically controllable when process fixes come first and chemistry comes second: reduce vortexing, switch to under-surface powder induction or inline recirculation, and r…
Read
5 Variables Formulators Must Screen Before Custom Defoamer Formulation
5 Variables Formulators Must Screen Before Custom Defoamer Formulation ! Decorative custom defoamer formulation title card A custom defoamer formulation is justified once an off-the-shelf product fails repeatedly under real process conditions, whether from extreme pH, high surfactant load, elevated…
Read
Additive Lead Times: What to Expect and How to Shorten Them
Additive Lead Times: What to Expect and How to Shorten Them ! Decorative title card illustration Specialty formulation additives, including dispersants, defoamers, and rheology modifiers, typically move from purchase order to delivery in 10 to 30 days, according to chemical industry supply-chain dat…
ReadNeed technical assistance?
Our team can help you select the right additive for your formulation.
Contact Technical Support