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

VOK VOK-7447 Defoamer

VOK VOK-7447 Defoamer is a high-performance silicone-based antifoam agent designed for demanding industrial applications including water treatment, coatings, and chemical processing. It delivers rapid foam suppression, excellent stability, and broad compatibility with minimal dosage. The formulation ensures long-lasting defoaming action without compromising system clarity or performance. Trusted for reliability across harsh pH and temperature conditions.
  • vok vok 7447 defoamer_4afeed7e
  • vok vok 7447 defoamer_4afeed7e

Features Of VOK VOK-7447 Defoamer

  1. High-efficiency silicone-based defoaming action in both foam initiation and propagation stages.

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

  3. Low dosage requirement—effective at 0.05–0.3 wt% in most formulations.

  4. Thermally stable up to 120°C, maintaining performance during high-shear mixing and hot-process operations.

  5. Non-yellowing and non-staining—ideal for clear coatings and white pigment systems.

Typical Applications Of VOK VOK-7447 Defoamer

  1. Architectural and industrial waterborne paints and coatings.

  2. Latex-based adhesives and sealants.

  3. Textile printing pastes and pigment dispersions.

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

  5. Water-based inks and overprint varnishes.

Specifications Of VOK VOK-7447 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)1.01–1.04 g/cm³
Viscosity (25°C, mPa·s)150–400 (Brookfield RV, spindle #3, 20 rpm)
Storage Stability≥12 months in unopened original container at 5–30°C
Freeze-Thaw StabilityStable after one cycle (–10°C for 16 h → 25°C for 8 h)


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