RT920S Polyether Defoamer for High-Viscosity Coatings
RT920S is a concentrated polyether siloxane defoamer, containing aerated silicon and with strong defoaming capability. It is recommended for high-viscosity and airless spray systems, with exceptional effectiveness in eliminating microbubbles.
- Highly effective against microbubbles
- Ideal for airless or mixed-air spraying
- Strongly recommended for high-viscosity formulations
Technical Specifications of RT920S Polyether Defoamer
- Datasheet
| Chemical composition | Polysiloxane-polyether copolymer. Contains fumed silica. |
| Active content | 100% |
| Appearance | Colorless to pale yellowish turbid liquid |
| Density | 0.98-1.08 g/cm³ |
| Recommended amount | 0.1-1.5% of the total formulation |
| Usability | |
| Usable | Water-based, add during grinding |
| Partially Usable | Radiation curing, add during paint mixing |
| Unusable | Oil-based, two-component 100% |
| Solubility | |
| Insoluble | Water, Ethanol, Butyl acetate |
| Partially Soluble | Solvent oil, TPGDA |
High Viscosity Coating Defoamer Recommended Applications
●●●●● Airless spraying
●●●●○ Compressed air spraying
●●●●○ Flexographic and gravure printing
●●●○○ Brush application/roller application
●●●○○ Self-leveling
○○○○○ Immersion, flow coating, spray coating
How to Use Polyether Defoamer for High-Viscosity Coatings?
- The long-term efficacy of the product depends on its specific formulation, and individual formulations should be tested separately.
- The product requires high shear for mixing.
- Can be added to the coating in either supplied or pre-diluted form;
- Stir before use.
Benefits of RT920S Polyether Defoamer in Typical Applications
You can control microbubbles generated during spraying and film formation with the RT920S defoamer, especially in airless-applied wood coatings. It can help you improve surface smoothness, clarity and overall finish quality.
RT920S defoaming agent is effective at suppressing microfoam during the production and application of high-viscosity industrial coatings. You can minimize coating defects and achieve a more consistent film appearance.
RT920S antifoaming agent is also supported for use in flexographic and gravure inks. With reliable foam control, you can achieve stable printing operations and improve print uniformity.
Polyether Modified Silicone Defoamer Package and Storage
Store in a dark place, keep the defoamers unopened and stored at 5°C to 35°C. The product has a shelf life of 12 months from the date of production.
25kg per barrel, with customized packaging for customers.
Download the TDS File or Contact Our Experts for a Customized Formulation
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FAQ About RT920S Polyether Defoamer
Both are ok. It will not affect the final coating viscosity by proper application and dosage.
Yes. With the optimized polyether-siloxane structure, our RT920S polyether defoamer has faster defoaming speed, better microbubble control, and longer-lasting performance, much superior to other defoamers.
Yes. We have professional R&D and Quality Control teams to support formulation optimization.
No, our RT920 defoaming agent does not affect gloss or transparency. Please contact us for your specific formulation, we will test with you to ensure your application.
Yes, viscosity can influence defoaming performance. While our defoamer RT920S is especially suitable for high-viscosity systems. You can use it to control microbubbles in such formulations.
