TEGO Airex 921 is a German-origin defoamer, formulated as a high-compatibility organic polymer solution. Engineered with advanced thermo-mechanical properties, it is designed to secure a competitive edge in industrial applications. This transparent pale golden liquid (with a viscosity of 80-200 mPa·s) offers ultra-wide compatibility in solvent-borne, solvent-free, and radiation-curing systems, achieving ≥99.6% microfoam elimination at a dosage of 0.08%-0.3%. Certified by REACH, ISO 9001, and GB 30981-2020, it enhances gloss (60°≥96 GU) and adhesion (cross-cut ≥4B) with a surface tension as low as 23.8 dyn/cm (in 0.4% solution).
Zero Silicone Risk: Passes GC-MS/FTIR tests with no craters or fisheyes, avoiding issues related to silicone contamination and ensuring smooth surface finishes.
Universal Compatibility: Remains stable in 10-85% solid epoxy/acrylate/PU systems, adapting to a wide range of formulation requirements.
High-Speed Defoaming: Features 0.15 μm active molecules that eliminate 0.6 μm bubbles in 0.6 seconds (per ASTM D892-XIX standards), ensuring rapid and efficient foam control.
Low-VOC Formula: Complies with EU 2014/34/EU, using low-aromatic solvent (aniline point ≥78°C) to meet environmental and regulatory standards.
Auto Refinish Clearcoats: Achieves a DOI (Distinctness of Image) ≥98.8 in acrylic spray systems with ≥75% solids, enhancing the high-gloss finish of automotive refinishes.
Wood Flow Coating: Eliminates pinholing in waterborne PU formulations with ≥35% solids (capable of ≥8,000 abrasion cycles), ensuring smooth, durable wood coatings.
Electronic Conformal Coatings: Endures ≥2,000 hours of salt spray in solvent-free epoxy with ≥80,000 mPa·s viscosity, providing reliable protection for electronic components.
Type | Organic polymer solution defoamer |
Appearance | Transparent pale golden liquid |
Active Content | Proprietary organic polymer (10%) |
Solvent | Low-aromatic solvent (aniline point ≥78°C) |
Dynamic Viscosity | 80-200 mPa·s |
pH Range | 3-11 |
Density | 0.94-1.02 g/cm³ |
Surface Tension | 23.8 dyn/cm |
Flash Point (PMCC) | ≥38°C |
Compatible Systems | Solvent/solvent-free/radiation-curing |
Addition Stage | Letdown phase or inline dosing |
Shelf Life | 24 months (sealed, 0-50°C) |
Packaging | 25kg/galvanized drum or 200kg/IBC tote |
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China