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

Evonik TEGO Airex 440 Defoamer

Evonik TEGO Airex 440 Defoamer is a silicone-free, liquid antifoam agent designed for water-based systems. It delivers rapid defoaming and lasting foam suppression in coatings, adhesives, and construction chemicals. Compatible with low-shear processes, it ensures easy dispersion and minimal impact on final product properties.
  • evonik tego airex 440 defoamer_4c1eef40
  • evonik tego airex 440 defoamer_4c1eef40

Features Of Evonik TEGO Airex 440 Defoamer

  1. Highly effective silicone-free defoamer for aqueous systems.

  2. Excellent compatibility with a broad range of water-based formulations without causing surface defects.

  3. Rapid knock-down and long-term foam suppression, even under dynamic shear conditions.

  4. Low dosage requirement ensures cost-efficiency and minimal impact on final product properties.

  5. Readily dispersible in cold water, enabling easy integration during manufacturing.

Typical Applications Of Evonik TEGO Airex 440 Defoamer

  1. Architectural coatings (e.g., interior/exterior paints and primers).

  2. Industrial maintenance coatings and protective finishes.

  3. Water-based adhesives and sealants.

  4. Construction chemicals including cementitious mortars and tile adhesives.

  5. Textile auxiliaries such as dyeing and finishing baths.

Specifications Of Evonik TEGO Airex 440 Defoamer

Chemical TypePolyether-modified nonionic polymer
Product FormOpaque white liquid
AppearanceHomogeneous, slightly viscous liquid
pH (1% aqueous dispersion)6.0 – 7.5
Density (20 °C)1.02 – 1.05 g/cm³
Viscosity (25 °C, Brookfield RV, spindle #3, 20 rpm)500 – 1,500 mPa·s
Solubility / DispersibilityReadily dispersible in water; forms stable dilutions
Recommended Storage Temperature5 – 30 °C


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