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

Elementis Deqian DAPRO DF 677 Defoamer

Elementis Deqian DAPRO DF 677 is a high-performance silicone-free defoamer from Elementis’ DAPRO DF series, engineered for rapid foam control in water-based industrial coatings, inks, and adhesives. It offers excellent compatibility, low odor, and stable performance across varying pH and temperature conditions without affecting gloss or substrate wetting.
  • elementis deqian dapro df 677 defoamer_8b8b644a
  • elementis deqian dapro df 677 defoamer_8b8b644a

Features Of Elementis Deqian DAPRO DF 677 Defoamer

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

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

  3. Low dosage efficiency — achieves optimal performance at 0.1–0.5% w/w in most formulations.

  4. Stable under high-shear mixing and elevated temperatures up to 90°C during processing.

  5. Non-yellowing and non-staining — suitable for clear coatings and light-colored architectural paints.

Typical Applications Of Elementis Deqian DAPRO DF 677 Defoamer

  1. Architectural waterborne interior and exterior paints.

  2. Industrial maintenance coatings and protective finishes.

  3. Water-based adhesives and construction sealants.

  4. Textile printing pastes and pigment dispersions.

  5. Wood coatings and water-reducible varnishes.

Specifications Of Elementis Deqian DAPRO DF 677 Defoamer

Chemical TypeSilicone-polyether copolymer dispersion
Product FormOpaque white liquid
AppearanceHomogeneous milky dispersion
pH (1% aqueous solution)6.0–7.5
Specific Gravity (25°C)1.02–1.06 g/cm³
Viscosity (Brookfield RVT, #2 spindle, 20 rpm, 25°C)150–400 mPa·s
Primary ApplicationsWaterborne coatings, adhesives, construction chemicals
Key FeaturesRapid defoaming, low-foam re-entrainment, storage stability


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