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

Evonik TEGO Airex 904W Defoamer

Evonik TEGO Airex 904W Defoamer is a water-based, silicone-free antifoam agent designed for aqueous systems. It delivers rapid defoaming and lasting foam suppression in coatings, adhesives, and construction chemicals. Featuring excellent compatibility and low dosage efficiency, it ensures high substrate wetting without compromising surface quality or stability.
  • evonik tego airex 904w defoamer_6ff26b1e
  • evonik tego airex 904w defoamer_6ff26b1e

Features Of Evonik TEGO Airex 904W Defoamer

  1. Highly effective silicone-free defoamer for water-based systems.

  2. Excellent compatibility with acrylic, styrene-acrylic, and vinyl acetate copolymer dispersions.

  3. Low dosage requirement with rapid foam breakdown and sustained antifoam performance.

  4. Stable in neutral to mildly alkaline pH ranges (pH 6–9).

  5. Non-yellowing and suitable for applications requiring optical clarity.

Typical Applications Of Evonik TEGO Airex 904W Defoamer

  1. Architectural coatings including interior and exterior wall paints.

  2. Industrial maintenance coatings and protective coatings.

  3. Adhesives and sealants based on aqueous polymer dispersions.

  4. Textile printing pastes and pigment preparations.

  5. Construction chemicals such as cementitious tile adhesives and renders.

Specifications Of Evonik TEGO Airex 904W Defoamer

Chemical TypePolyether-modified polyglycol
Product FormOpaque white liquid
AppearanceHomogeneous, slightly viscous liquid
Primary ApplicationsWater-based coatings, adhesives, construction chemicals
Key FeaturesSilicone-free, low-foaming, easy dispersion
BenefitsMinimizes surface defects, improves gloss uniformity, enhances storage stability
pH (1% aqueous solution)7.0–8.5
Recommended Dosage Range0.1–0.5 wt% relative to total formulation


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