Paint Defoamer Supplier for Industrial Challenges
In real water-based paint production, foam is a common and persistent issue that leads to surface defects, reduced efficiency, and unstable application performance. Celotech Ruico is a professional coating additives manufacturer, providing outstanding paint defoamers with practical solutions to solve the following key challenges:
- Foam formation during high-shear production.
- Intability during application and storage.
- Craters, fish-eyes, pinhole and other surface defects.
Defoamer for Paint Specification
Brand: Celotech Ruico
Appearance: White to light yellow liquid
CAS Type: Mixture
Other Grades: Cement Defoamer, Defoamer for Adhesive
Customization/OEM: Support
MOQ: 1000 kg
Defoamer Price: On Request
Paint Defoamer In-depth Industry Insights & Strategy
Breaking a bubble in coating formulation is easy, the real challenge is achieving persistent air release without causing surface defects. We focus on the four “Invisible Indicators” that define a premium defoamer for paints and coatings:
| Key Metric | Our Technical Strategy | Values to Customers |
| Dynamic Defoaming | High-shear stable modified polyether/silicone system that remains active under strong mechanical stress | Prevents foam during mixing, grinding, and pumping, improving production efficiency |
| Persistence | Anti-migration and thermal-stable formulation tested under 50°C storage conditions | Maintains defoaming performance after long storage, avoiding shelf-life failure |
| Anti-Defect Performance | Balanced surface tension control with optimized compatibility | Eliminates foam without craters, fish-eyes, or surface defects |
| Recoatability | Non-migrating surface activity control | Ensures stable intercoat adhesion in multi-layer coating systems |
The Grades of Paint Defoamers
We have developed a wide range of defoamers for water-based paint, such as thick coatings, high-speed automatic spraying, zero-VOC formulations, deep color paints, etc.
For Architectural & General Paints
Rapid defoaming and effective micro-bubble removal with low risk of shrinkage.
For General Purpose Paints
Strong foam suppression for architectural coatings and standard paint systems.
For Printing Ink & Sensitive Systems
Stable long-lasting defoaming, unaffected by temperature and pH.
For Waterproof Coatings
Excellent water dispersibility and compatibility with low addition level.
For Thick & High Viscosity Coatings
Stable and long-lasting defoaming for stone paints and textured coatings.
For General Paint & Waterproof Systems
Rapid defoaming with long-lasting performance and pH stability.
For High Viscosity Roller Coatings
Efficient foam breaking and suppression during roller application.
For Roller Application & Thick Paints
Fast micro-bubble breaking with strong foam suppression.
Paint Defoamer Types
Based on the active components and chemical composition, paint defoamers can be classified into three main types.
Suitable for emulsion paints, interior wall paints, low-to-medium performance water-based coatings. Provides economical foam control with good compatibility.
Ideal for high-performance waterborne and industrial paints. Offers strong and fast foam breaking, effective for persistent microfoam and foam generated under high shear.
Selected for paints requiring excellent surface appearance, printing inks, clear coatings, and some industrial paints. Reduces the risk of silicone-related surface defects.
Customer Cases
Based on typical formulation experience, the following examples illustrate how our paint defoamers perform in applications.
A water-based architectural coating manufacturer in Southeast Asia was facing persistent foam issues during high-speed dispersion and filling processes. They faced the problems of unstable batch volume and occasional overflow during production.
After switching to our paint defoamer system, they got below positive results:
- Foam reduction efficiency improved by approx. 60–80%in the high-shear mixing stage
- Filling consistency increased, with batch volume deviation controlled within ±1–2%
- No visible surface defects such as craters or fish-eyes in the final film
- Stable performance maintained after 3-month storage testing at room temperature
Another client from East Africa faced micro-foam problems in spraying and rolling industrial coatings, which led to uneven surface appearance and occasional pinholes.
After being optimized by our defoamer for coatings, the results improved:
- Micro-foam defects reduced by 50–70%during application
- Coating smoothness enhanced under brush and spray conditions
- Performance gets stable in both production and on-site applications
Celotech Ruico Paint Defoamer Advantages
Suitable for a wide range of water-based coatings, including acrylic, styrene-acrylic, and PU systems.
Minimizes influence on gloss, transparency, and leveling, maintaining coating appearance.
Delivers strong foam control at low addition levels, helping reduce formulation cost.
Formulated to meet low VOC requirements and suitable for export-oriented coatings.
Foam Control Across the Entire Coating Process
We don’t just supply defoamers for paints and coatings, but also provide complete foam control throughout all stages during production and application.
- Grinding & Dispersion:
Our defoamers for paint can control micro-foam generated under high shear, improving grinding efficiency and batch stability. - Let-down & Mixing:
Celotech Ruico defoamers for paint can rapidly break entrapped air, ensuring smooth mixing and consistent filling performance. - Application Stage:
We developed paint defoamers with a strong ability to release air during brushing or rolling, preventing pinholes and surface defects.
Precision Control for High-End Water-Based Paints
For high-gloss and ultra-thin coatings, our paint defoamers can offer excellent compatibility with minimal side effects.
- Micro-foam Management:
Our defoamer agents can eliminate deep micro-bubbles to prevent pinholes and improve film density. - Defect-Free Performance：
We have superior defoamers designed for sensitive coating systems with strict surface quality requirements. - Gloss Retention:
Ensure minimal gloss change after defoamer addition. - Compatibility:
Avoids craters, fish-eyes, and surface defects even in sensitive acrylic systems.
Technical Support & Application Services
The Celotech Ruico team provides optimization suggestions covering additives, dosage, and production stages to help you improve overall stability.
For example, if foam issues persist in your formulation, we help review formulation balance and process conditions. Additionally, we offer practical grade recommendations to help you quickly identify the most suitable defoaming agents.
More About Celotech Ruico Paint Defoamer
- Performance Comparison
- Selection Guide
- TDS for Download
- After-Sales Support
| Parameter | Without Defoamer | With Celotech Ruico Defoamer |
| Foam Level (during mixing) | High | Significantly reduced |
| Micro-bubbles | Persistent | Effectively eliminated |
| Filling Stability | Unstable | Smooth and consistent |
| Surface Defects | Craters/pinholes visible | Defect-free surface |
| Production Efficiency | Reduced | Improved |
| Application Scenario | Recommended Grade | Key Benefit |
| High-shear dispersion | RT810S / RT910S | Fast dynamic defoaming |
| High-gloss coatings | RT860SA / RT9202W | High compatibility, no defects |
| Thick/high viscosity | RT8512 / RT930S | Strong air release |
| Roller application | RT8334 / RT8560T | Prevent pinholes |
| Waterproof coatings | RT8086 / RT8580C | Stable in harsh systems |
Note: The above grade selections are for your reference. Please check with our team for your systems and technical needs.
| Grade | Chemical Composition | Effective rate | Specific gravity (25°C) | Recommended Application | TDS |
| RT810S | Polyether mineral oil defoamer | approximately 100% | 0.8-1.0 g/ml | Architecture paints(exterior&interior) | Download PDF |
| RT820A | Mineral oil-based defoamer | Approximately 100% | 0.80-1.0 | Architecture paints | Download PDF |
| RT8211A | Mineral oil defoamers containing silica | 100% | 0.8-1 g/ml | Printing Ink | Download PDF |
| RT8086 | Polyether Mineral Oil-based Defoaming Agent | approximately 100% | 0.8-1 g/ml | 2-component waterproof | Download PDF |
| RT8512 | Mineral oil defoamers containing silica | approximately 100% | 0.8-1 g/ml | Stone paints | Download PDF |
| RT8580C | Mineral oil-based defoaming agent emulsion | 0.85-1 g/ml | General Application | Download PDF | |
| RT8560T | Silicone-based mineral oil defoamer | approximately 100% | 0.8-1 g/ml | Architecture paints(exterior&interior) | Download PDF |
| RT8334 | Mineral oil defoamer | Approximately 100%
| 0.85-1.0 | Architecture paints | Download PDF |
| RT8421 | Mineral oil-based defoamer | approximately 100% | 0.8-1 g/ml | adhesive,polymer emulstions, 2-component waterproof | Download PDF |
| RT860SA | Mineral oil-based defoamer | approximately 100% | 0.8-1 g/ml | Download PDF | |
| RT910S | Polyether siloxane copolymer. Contains fumed silica | approximately 100% | 0.98-1.08 g/cm³ | Industrial paints | Download PDF |
| RT920S | Polyether siloxane copolymer. Contains fumed silica | 100% | 0.98-1.08 g/cm³ | Industrial paints | Download PDF |
| RT930S | Polysiloxane-polyether copolymer. Contains fumed silica | approximately 100% | 0.98-1.08 g/cm³ | High viscosity emulsion paints | Download PDF |
| RT9202W | Polyether-siloxane copolymer emulsion. Contains fumed silica | 25%±2 | 0.98-1.08 g/cm³ | High-quality Industrial paints | Download PDF |
| RT9030W | Polyether-siloxane copolymer emulsion. Contain fumed silica | 30%±2 | 0.98-1.08 g/cm³ | High-quality Industrial paints | Download PDF |
We are committed to more than selling, also strive for sustainable, win-win cooperation and long-term collaboration.
- 24H fast response for all technical and product issues
- Problem Solving with root cause analysis and practical solution proposals
- On-site technical support for formulation guidance and troubleshooting assistance
- Ongoing Optimization to improve formulation performance and application results
Quick Q&A About Paint Defoamer
Typical dosage of our paint defoamer is 0.1%–0.5%, actual addition based on the formulation and foam level. It can be added during the grinding or let-down stage, with final adjustment if needed. Contact us for detailed tips.
Our defoamers for paints and coatings can remain stable without phase separation or performance loss at temperatures of 5 to 35℃.
Our defoamers for paint are usually most effective during the grinding and let-down stages to remove the foam by releasing the trapped air.
No, our defoamers for water-based paint generally do not destroy the aging performance under the recommended dosage.
Main considerations are defoamer dosage imbalance, coating system incompatibility, or changes in application conditions. You can contact our team for technical support with your issues.
In most cases, our paint defoamers can be directly substituted with minimal impact on system balance, but a slight formulation adjustment is recommended for optimal performance, and we provide technical support if needed.
