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

Dow DOWSIL 1313 Defoamer

Dow DOWSIL 1313 Defoamer is a silicone-based antifoam agent designed for water-based industrial systems. It rapidly breaks foam and suppresses re-foaming in coatings, adhesives, and cleaning formulations. Featuring excellent compatibility and low dosage efficiency, it maintains system stability without affecting product clarity or performance.
  • dow dowsil 1313 defoamer_3e35e903
  • dow dowsil 1313 defoamer_3e35e903

Features Of Dow DOWSIL 1313 Defoamer

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

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

  3. Low dosage requirement—typically effective at 0.05–0.3 wt% in final formulation.

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

  5. Non-yellowing and does not adversely affect film clarity or gloss in finished coatings.

Typical Applications Of Dow DOWSIL 1313 Defoamer

  1. Architectural and industrial waterborne paints and coatings.

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

  3. Construction chemicals, including cementitious tile adhesives and self-leveling underlayments.

  4. Textile and leather finishing auxiliaries where foam control is critical during padding and coating processes.

  5. Water-based inks for flexographic and gravure printing applications.

Specifications Of Dow DOWSIL 1313 Defoamer

Chemical TypeSilicone oil-in-water emulsion
Product FormWhite to off-white liquid
AppearanceOpaque, slightly viscous emulsion
pH (1% aqueous dispersion)6.0–8.0
Specific Gravity (25 °C)0.98–1.02 g/cm³
Viscosity (Brookfield LV, 25 °C, Spindle #3, 20 rpm)150–400 mPa·s
Primary ApplicationsWaterborne coatings, adhesives, construction chemicals, textile auxiliaries
Key FeaturesRapid defoaming, lasting antifoam performance, low-foaming dilution stability


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