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

BASF FoamStar Defoamer

The BASF FoamStar series delivers high-performance defoamers engineered to address foam challenges in waterborne coatings, varnishes, and printing inks. Combining polymer dispersions, silanes, and modified PDMS chemistries, these additives ensure rapid bubble collapse while maintaining compatibility with acrylic, polyurethane, and PVC resin systems.

Their low-VOC profiles align with stringent environmental regulations, supporting eco-friendly formulations in curtain, roller, and spray applications .

With hydrolytic stability and long-lasting foam suppression, the products optimize production efficiency and final coating aesthetics across diverse substrates, including metals and porous surfaces .


  • basf-foamstar-defoamer
  • basf-foamstar-defoamer

Features Of BASF FoamStar Defoamer

  1. Broad Compatibility: Compatible with water-based varnishes, low-pigment coatings, and printing inks, including ultra-fine acrylic dispersions and polymer-emulsion systems

  2. Effective Foam Control: Rapid foam suppression with long-lasting defoaming properties, suitable for high-shear processes and polymerization applications

  3. Minimal Impact on Substrates: Low risk of affecting rubber swelling, ink rollers, or coating gloss, ensuring consistent performance in sensitive systems

  4. Versatile Formulations: Available in silicone, polymer, and mineral oil-free variants, catering to VOC-free and eco-friendly requirements

  5. Optimized Dosage Efficiency: Effective at low concentrations (typically 0.1–0.5%), with flexibility for high-foam systems (up to 3.0%)

Typical Applications Of BASF FoamStar Defoamer

  1. Architectural Coatings: Ideal for low-PVC and high-gloss latex paints, ensuring bubble-free finishes

  2. Industrial Coatings: Used in acrylic, polyurethane, and epoxy systems for automotive, metal, and wood coatings

  3. Printing Inks: Enhances foam control in acrylic and solvent-based ink systems without compromising print quality

  4. Polymerization Processes: Effective in PVC, vinyl acetate, and acrylic emulsion production, preventing foam during synthesis

Specifications Of BASF FoamStar Defoamer

ModelChemical CompositionActive IngredientRecommended Dosage
FoamStar A38Organic-modified polysiloxane + hyperbranched polymer100%0.25–0.5%
FoamStar ST2410ACPolymer-mineral oil composite100%0.03–0.5%
FoamStar SI2293Modified polydimethylsiloxane solution/0.5–1.5%
FoamStar SI2280Modified polydimethylsiloxane100%0.1–1.0%
FoamStar SI2250Modified polydimethylsiloxane100%/
FoamStar SI2292Silicone-based69–71%0.5–1.5%
FoamStar SI2213Defoaming polymers + silicone/emulsifiers100%0.1–1.0%


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