TEGO Airex 921 is a German-origin defoamer, formulated as a high-compatibility organic polymer solution. Engineered with advanced thermo-mechanical properties to secure a competitive edge, it appears as a transparent pale golden liquid with a viscosity of 80-200 mPa·s. It demonstrates 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, eliminating concerns of silicone-related defects that could compromise surface quality.
Universal Compatibility: Maintains stability in 10-85% solid epoxy/acrylate/PU systems, adapting to a wide range of formulation solid contents and resin types.
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 a low-aromatic solvent (aniline point ≥78°C) to meet strict environmental and regulatory requirements for volatile organic compounds.
Auto Refinish Clearcoats: Achieves a DOI (Distinctness of Image) ≥98.8 in ≥75% solid acrylic spray systems, ensuring a high-gloss, mirror-like finish for automotive refinishing.
Wood Flow Coating: Eliminates pinholing in ≥35% solid waterborne PU coatings (capable of ≥8,000 abrasion cycles), enhancing durability and surface smoothness in wood finishing.
Electronic Conformal Coatings: Endures ≥2,000h salt spray in ≥80,000 mPa·s solvent-free epoxy, providing reliable protection against corrosion for electronic components.
Optical UV Films: Maintains ≥99.8% transmittance with ≤0.05% haze in films ≤5 μm thick, preserving optical clarity for precision optical applications.
Type | Organic polymer solution defoamer |
Appearance | Transparent colorless liquid |
Active Content | Proprietary organic polymer (10%) |
Solvent | Low-VOC aromatic (aniline point ≥80°C) |
Dynamic Viscosity | 50-150 mPa·s |
pH Range | 4-10 |
Density | 0.92-0.98 g/cm³ |
Surface Tension | 23.0 dyn/cm |
Flash Point (PMCC) | ≥40°C |
Compatible Systems | Solvent/solvent-free/radiation-curing |
Addition Stage | Letdown phase or inline dosing |
Shelf Life | 24 months (sealed, 5-40°C) |
Packaging | 20kg/galvanized drum or 200kg/IBC tote |
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E-mail: wangxingqiang@ericwchem.com
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