Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Evonik TEGO Airex 920 Silicone-free Defoamer

Evonik TEGO Airex 920 is a high-performance defoamer (200-400 mPa·s) for coatings is a high-performance defoamer (200-400 mPa·s) for coatings, eliminating 99.8% microfoam at 0.04-0.2% dosage. REACH/ISO certified, it enhances gloss (60°≥97 GU) and weatherability (QUV 6,000h ΔE≤0.5) in epoxy/acrylic systems.

Features Of Evonik TEGO Airex 920 Silicone-free Defoamer

  1. Broad Compatibility: Works in 15-90% solid epoxy/acrylic/polyester systems

  2. Non-Silicone: Zero siloxane defects (GC-MS/FTIR verified)

  3. Fast Action: Removes 0.8μm bubbles in 0.7s via 0.2μm organic particles

  4. UV Stability: No yellowing (ΔYI≤0.2) under UV-LED/EB curing

  5. Cost Saving: 90% less usage vs conventional defoamers

Typical Applications Of Evonik TEGO Airex 920 Silicone-free Defoamer

  1. Auto Clearcoats: DOI≥99 in high-solid acrylic spray coatings

  2. Wood Coatings: Enables 600+ grit sanding in waterborne PU (80+ m/min)

  3. E-Encapsulants: Void-free in 100,000+ mPa·s solvent-free epoxy

  4. Optical Films: Maintains 99.6% transmittance with ≤0.1% haze

Specifications Of Evonik TEGO Airex 920 Silicone-free Defoamer

Type
Organic polymer solution defoamer
Appearance
Transparent amber liquid
Active Content
Proprietary organic polymer (24%)
Solvent
Low-aromatic solvent (aniline point ≥85°C)
Dynamic Viscosity
200-400 mPa·s
pH Range
3-12
Density
0.95-1.05 g/cm³
Surface Tension
22.5 dyn/cm
Flash Point (PMCC)
≥45°C
Compatible Systems
Solvent/solvent-free/radiation-curing
Addition Stage
Letdown phase or inline dosing
Shelf Life
24 months (sealed, 0-50°C)
Packaging
20kg/galvanized drum or 200kg/IBC tote



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