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

Evonik Surfynol MD-20 Molecular Defoamer Surfactant

Evonik Surfynol MD-20 is a high-performance molecular defoamer and surfactant from the Surfynol series, designed for rapid foam suppression in water-based coatings, inks, and adhesives without compromising substrate wetting or flow. Its low-viscosity, non-silicone chemistry ensures excellent compatibility and long-term stability across diverse formulations.
  • evonik surfynol md 20 molecular defoamer surfactant_31400223
  • evonik surfynol md 20 molecular defoamer surfactant_31400223

Features Of Evonik Surfynol MD-20 Molecular Defoamer Surfactant

  1. Highly effective molecular defoamer with rapid foam suppression and long-term foam control.

  2. Low dosage efficiency — achieves optimal performance at low use levels in demanding formulations.

  3. Excellent compatibility with water-based systems, including acrylic, polyurethane, and epoxy dispersions.

  4. Non-silicone chemistry ensures no surface defects, haze, or recoatability issues in sensitive coatings.

  5. Stable under high shear, elevated temperature, and broad pH range (pH 4–12).

Typical Applications Of Evonik Surfynol MD-20 Molecular Defoamer Surfactant

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

  2. Industrial maintenance coatings requiring defect-free film formation.

  3. Water-based adhesives and sealants where foam-induced voids compromise bond integrity.

  4. Printing inks, especially flexographic and gravure inks for paper and flexible packaging.

  5. Construction chemicals including cementitious tile adhesives and self-leveling compounds.

Specifications Of Evonik Surfynol MD-20 Molecular Defoamer Surfactant

Chemical TypeAcetylenic diol-based nonionic surfactant
Product FormLiquid
AppearanceClear, pale yellow liquid
Active ContentApprox. 100% (neat)
Density (20 °C)~0.95 g/cm³
Flash PointNot applicable (non-flammable)
pH (1% aqueous solution)6.0–7.5
SolubilityMiscible with water and common organic solvents (e.g., glycol ethers, alcohols)


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