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

Dow DOWSIL SC 5570 Defoamer

Dow DOWSIL SC 5570 Defoamer is a silicone-based antifoam emulsion designed for water-based industrial systems. It delivers rapid foam knockdown and lasting suppression in coatings, adhesives, and cleaning formulations. Compatible with acrylics and latexes, it offers low dosage efficiency, excellent stability, and minimal surface defects—ensuring high-performance defoaming without compromising product quality or appearance.
  • dow dowsil sc 5570 defoamer_5c66fdb4
  • dow dowsil sc 5570 defoamer_5c66fdb4

Features Of Dow DOWSIL SC 5570 Defoamer

  1. Highly effective silicone-based defoamer for rapid foam knockdown 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 0.05–0.3 wt% active in final formulation.

  4. Thermally stable up to 120 °C, maintaining performance during high-temperature polymerization and processing.

  5. Non-yellowing and non-staining, preserving clarity and color integrity in sensitive coatings and adhesives.

Typical Applications Of Dow DOWSIL SC 5570 Defoamer

  1. Architectural and industrial waterborne paints and coatings.

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

  3. Textile and leather finishing auxiliaries requiring low-foam processing.

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

  5. Water-based inks and pigment dispersions.

Specifications Of Dow DOWSIL SC 5570 Defoamer

Chemical TypeSilicone oil-in-water emulsion
Product FormOpaque white liquid
AppearanceHomogeneous, pourable emulsion
pH (1% aqueous dilution)6.0–8.0
Specific Gravity (25 °C)0.98–1.02 g/cm³
Viscosity (Brookfield RV, 25 °C, spindle #3, 20 rpm)500–1,500 cP
Active Content25–28 wt%
Freeze-Thaw StabilityStable after one cycle (–4 °C for 24 h, then 25 °C for 24 h)


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