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

VOK VOK-845 Defoamer

VOK VOK-845 Defoamer is a high-efficiency silicone-based antifoam agent designed for demanding industrial processes including coatings, inks, and chemical manufacturing. It delivers rapid foam suppression, excellent compatibility, and long-lasting defoaming performance under high shear and elevated temperatures.
  • vok vok 845 defoamer_6f056958
  • vok vok 845 defoamer_6f056958

Features Of VOK VOK-845 Defoamer

  1. Highly effective silicone-based defoamer with rapid knock-down and lasting 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% w/w in final formulation.

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

  5. Non-yellowing and non-silicone-residue-forming, ensuring clarity and surface integrity in sensitive coatings.

Typical Applications Of VOK VOK-845 Defoamer

  1. Architectural and industrial waterborne paints and coatings.

  2. Adhesives and sealants, especially PVA and SBR-based formulations.

  3. Textile printing pastes and pigment dispersions.

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

  5. Wood coatings and clear varnishes requiring bubble-free film formation.

Specifications Of VOK VOK-845 Defoamer

Chemical TypeSilicone-polyether copolymer dispersion
Product FormOpaque white liquid
AppearanceHomogeneous milky dispersion
pH (1% aqueous dilution)6.0–7.5
Density (25°C)1.01–1.04 g/cm³
Viscosity (25°C, Brookfield LVT, Spindle #3, 60 rpm)150–350 mPa·s
Active Content30 ± 2%
Primary ApplicationsWater-based coatings, adhesives, construction chemicals, textiles


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