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

Evonik Surfynol MD20 Defoamer

Evonik Surfynol MD20 Defoamer is a high-performance silicone-free defoaming agent designed for water-based industrial coatings, inks, and adhesives. It delivers rapid foam elimination, excellent compatibility, and long-term storage stability without affecting gloss or substrate wetting. Ideal for demanding low-foam applications where clarity and efficiency are critical.
  • evonik surfynol md20 defoamer_651795aa
  • evonik surfynol md20 defoamer_651795aa

Features Of Evonik Surfynol MD20 Defoamer

  1. Highly effective silicone-free defoamer for rapid foam knock-down and long-term foam suppression.

  2. Excellent compatibility with water-based systems, including acrylic, vinyl acetate, and styrene-butadiene emulsions.

  3. Low dosage requirement — typically effective at 0.1–0.5 wt% in final formulations.

  4. Non-yellowing and odorless, supporting high-clarity and aesthetic-sensitive coatings and adhesives.

  5. Stable under shear and thermal stress, maintaining performance during high-speed manufacturing processes.

Typical Applications Of Evonik Surfynol MD20 Defoamer

  1. Architectural and industrial waterborne paints and coatings.

  2. Adhesives and sealants, especially pressure-sensitive and latex-based formulations.

  3. Textile and leather finishing auxiliaries.

  4. Construction chemicals, including cementitious tile adhesives and grouts.

  5. Printing inks — aqueous flexographic and gravure inks.

Specifications Of Evonik Surfynol MD20 Defoamer

Chemical TypeAlkyl ethoxylate-based nonionic defoamer
Product FormLiquid
AppearancePale yellow to colorless, clear to slightly hazy liquid
pH (1% aqueous solution)6.0–8.0
Density (20 °C)0.98–1.02 g/cm³
Solubility in WaterPartially miscible; forms stable dispersion upon agitation
Storage StabilityStable for ≥12 months at 5–30 °C in sealed container
Primary ApplicationsWater-based coatings, adhesives, construction chemicals, textiles


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