RT930S High-Efficiency Grinding Defoamer
RT930S high-efficiency grinding defoamer is a concentrated polyether siloxane containing gas-phase silicon, recommended to be added during the grinding stage. It eliminates various foams effectively and demonstrates superior foam-breaking performance in different applications.
- Particularly suitable for color paint formulations.
- High efficiency of bubble bursting;
- Strongly recommended for the grinding stage.
RT930S High-Efficiency Grinding Defoamer TDS
- Datasheet
| Chemical composition | Polysiloxane-polyether copolymer. Contains fumed silica |
| Effective rate | Approximately 100% |
| Appearance | Colorless to pale yellow 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 | Oil-based, Two-component 100% |
| Unusable | Radiation curing, add during paint mixing |
| Solubility | |
| Insoluble | Ethanol, Water, Butyl acetate |
| Partially Soluble | Solvent oil, TPGDA |
High-Efficiency Grinding Defoamer Recommended Application Methods
●●●●● Airless spraying
●●●●○ Compressed air spraying
●●●●○ Flexographic and gravure printing
●●●○○ Brush application/roller application
●●●○○ Self-leveling
○○○○○ Immersion, flow coating, spray coating
High-Efficiency Grinding Defoamer Handling Instructions
- 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;
- It can be added to the coating in either supplied or pre-diluted form;
- Stir before use.
RT930S High-Efficiency Grinding Defoamer Typical Applications
High-Efficiency Grinding Defoamer Package and Storage
RT930S Silicone polyether modified defoamer should be stored in a dark place, kept sealed, and stored at 5°C to 35°C. The product shelf life is 12 months from the date of production.
Packaged in 25kg per barrel, with customized packaging for customers.
Why Choose RT930S for Pigment Grinding?
RT930S is designed for color coatings when you need strong and rapid foam breaking during pigment dispersion and grinding. You can benefit from the following advantages:
- Fast Foam Breaking: Breaks foam generated during high-shear grinding rapidly.
- Strong Bubble Destruction: Effective for demanding pigment-rich formulations with persistent foam.
- Grinding-Stage Focus: Specialized in controlling foam during pigment dispersion.
- Color Coating Compatibility: Does not compromise the coating process.
Download the TDS or Contact Our Experts for a Customized Formulation
FAQ About RT930S High-Efficiency Grinding Defoamer
Since RT930S may cause surface defects such as cratering or haziness in UV/EB-curing formulations. Due to the rapid curing mechanism of radiation systems, the silicone components in RT930S might not level properly, resulting in compromised optical clarity or adhesion.
RT930S polyether modified silicone defoamer delivers excellent defoaming performance without surface defects when used correctly under high-shear agitation. Its efficacy may be sub-optimal and may result in surface defects if the mixing is under low shear, or if it is used in incompatible systems.
The RT930S polyether-modified silicone defoamer’s efficacy depends on your specific formulation. We recommend conducting a stability test (such as a 14-day heat storage test at 50℃) for each individual formulation to ensure the defoamer remains active throughout the product’s shelf life.
No, we designed RT930S defoamer with good color development and pigment dispersion performance in most color paint systems.
Normally, RT930S polyether modified silicone defoamer will not affect recoating if used correctly. We suggest you make some tests before mass production.
