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

Dow DOWSIL SM 5571 Defoamer

Dow DOWSIL SM 5571 Defoamer is a silicone-based antifoam emulsion designed for high-efficiency foam control in water-based industrial processes. It offers rapid knockdown and lasting suppression in coatings, adhesives, and cleaning formulations. Compatible with low-surface-tension systems, it ensures minimal residue and excellent stability across pH and temperature ranges.
  • dow dowsil sm 5571 defoamer_9c9fd878
  • dow dowsil sm 5571 defoamer_9c9fd878

Features Of Dow DOWSIL SM 5571 Defoamer

  1. High-efficiency silicone-based defoaming agent designed 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—effective at 0.05–0.3 wt% in most formulations—minimizing impact on final product properties.

  4. Thermally stable up to 120°C, supporting high-temperature processing conditions without degradation or re-foaming.

  5. Non-yellowing and odorless, ensuring suitability for clear coatings, architectural paints, and sensitive indoor applications.

Typical Applications Of Dow DOWSIL SM 5571 Defoamer

  1. Architectural and industrial waterborne paints and coatings.

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

  3. Textile and leather finishing auxiliaries.

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

  5. Water treatment systems requiring non-ionic, low-foam process aids.

Specifications Of Dow DOWSIL SM 5571 Defoamer

Chemical TypeSilicone polymer dispersion in hydrocarbon carrier
Product FormOpaque white liquid
AppearanceViscous, milky suspension
Primary ApplicationsWater-based coatings, adhesives, construction chemicals
Key FeaturesRapid foam collapse, sustained antifoam performance, low surface tension
BenefitsImproved gloss uniformity, reduced pinholing, enhanced batch consistency
pH (1% aqueous dilution)6.0–8.0
Storage Stability12 months unopened at 5–30°C; protect from freezing


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