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

Evonik Surfynol DF-70 Defoamer

Evonik Surfynol DF-70 Defoamer is a silicone-free, liquid antifoam agent from Evonik’s Surfynol surfactant series. Designed for water-based coatings and inks, it delivers rapid foam suppression and long-term defoaming without affecting gloss or substrate wetting. Its low-viscosity, easy-dispersion formulation ensures compatibility and stability across diverse formulations.
  • evonik surfynol df 70 defoamer_6b720067
  • evonik surfynol df 70 defoamer_6b720067

Features Of Evonik Surfynol DF-70 Defoamer

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

  2. Excellent compatibility and low surface tension, minimizing risk of surface defects.

  3. Rapid knock-down and long-term foam suppression in dynamic processing conditions.

  4. Stable across a broad pH range (pH 4–12) and tolerant to electrolytes and surfactants.

  5. Low VOC content and REACH-compliant formulation suitable for eco-sensitive formulations.

Typical Applications Of Evonik Surfynol DF-70 Defoamer

  1. Architectural coatings and interior/exterior paints.

  2. Industrial maintenance coatings and coil coatings.

  3. Water-based adhesives and construction sealants.

  4. Printing inks, especially flexographic and gravure inks.

  5. Agrochemical formulations including suspension concentrates (SC) and emulsifiable concentrates (EC).

Specifications Of Evonik Surfynol DF-70 Defoamer

Chemical TypeNon-silicone polyether-based defoamer
Product FormOpaque white liquid
AppearanceHomogeneous, slightly viscous liquid
Primary ApplicationsDefoaming in water-based coatings, inks, adhesives, and agrochemicals
Key FeaturesSilicone-free, low-foaming, high compatibility, pH-stable
BenefitsPrevents pinholes, craters, and crawling; improves gloss uniformity and application efficiency
Storage StabilityAt least 12 months in unopened original container at 5–30 °C
Recommended Use Level0.05–0.5 wt% (based on total formulation)


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