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

Kemira DF-B-950 Defoamer

Kemira DF-B-950 Defoamer is a silicone-free, water-dispersible defoaming agent from Kemira’s DF-B series. Designed for demanding industrial applications including pulp & paper, wastewater treatment, and coatings, it delivers rapid foam suppression and long-lasting antifoam performance under high shear and elevated temperatures. Its robust formulation ensures excellent compatibility and stability in alkaline and saline environments.
  • kemira df b 950 defoamer_a658bc81
  • kemira df b 950 defoamer_a658bc81

Features Of Kemira DF-B-950 Defoamer

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

  2. Excellent compatibility with aqueous systems, including those containing surfactants, polymers, and electrolytes.

  3. Thermally stable across a broad temperature range, maintaining performance in hot process conditions.

  4. Low dosage efficiency — achieves optimal defoaming at concentrations as low as 0.01–0.1 wt%.

  5. Non-staining and non-silicone-residue-forming in most applications, supporting product clarity and surface quality.

Typical Applications Of Kemira DF-B-950 Defoamer

  1. Paper and board manufacturing — particularly in coating, size press, and white water systems.

  2. Water-based coatings and architectural paints — to prevent foam during production and application.

  3. Textile wet-end processing — including dyeing, printing, and finishing baths.

  4. Industrial cleaning formulations — where foam interference hinders spray, rinsing, or mechanical action.

  5. Adhesives and sealants — to ensure uniform mixing, pumping, and film formation.

Specifications Of Kemira DF-B-950 Defoamer

Chemical TypeSilicone polymer emulsion
Product FormWhite to off-white opaque liquid
AppearanceHomogeneous, slightly viscous emulsion
pH (1% aqueous dispersion)6.0–8.0
Specific Gravity (20°C)0.98–1.02 g/cm³
Viscosity (Brookfield RV, 25°C, spindle #3, 20 rpm)500–1500 mPa·s
Primary ApplicationsCoating, papermaking, textiles, water-based paints, industrial cleaners
Key FeaturesRapid foam collapse, persistent antifoam activity, low-foaming dilution stability


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