DOWSIL SH 5561 is a siloxane emulsion-based defoamer designed for aqueous and non-aqueous industrial systems. It has a milky liquid form (500-1,200 mPa·s viscosity), stays stably active at pH 3-12 and ≤80°C, and has dynamic surface tension as low as 26 dyn/cm—quickly collapsing micron-level foam with 6+ hours of suppression. ISO 9001 certified, it cuts mineral oil defoamer usage by 15% in coatings and inks while improving production uniformity.
Fast Foam Breakdown: Nano siloxane particles destroy foam within 5 minutes, making it ideal for high-speed dispersion processes.
Wide Compatibility: Works well with acrylic and polyurethane systems, effectively reducing coating defects.
Tough Condition Resistance: Withstands pH 3-12, high salinity, and 80°C heat without any performance degradation.
Eco-Friendly Compliance: APEO-free, VOC <50g/L, and meets the requirements of EU REACH and China GB/T 35602-2017.
Cost-Saving Performance: 0.05%-0.5% dosage lowers costs by 18% compared to traditional defoamers.
Coatings: Controls foam in water and solvent coatings, increasing gloss by 15% when dosed at 0.1%-0.3%.
Textile Dyeing: Reduces oil stains in dyeing slurries and finishing liquids, improving fabric quality.
Paper Manufacturing: Suppresses foam during pulp deinking processes to enhance pulp purity.
Cosmetics: Complies with ISO 22716 GMP standards, suitable for emulsion skincare product production.
Type | Siloxane emulsion defoamer |
Appearance | Milky liquid |
Active Content | Polydimethylsiloxane + silica |
Dynamic Viscosity | 500-1,200 mPa·s |
pH Range | 3-12 |
Surface Tension (0.5% solution) | 26 dyn/cm |
Recommended Dosage | 0.05%-0.5% (on total system) |
Packaging | 25kg/drum or 200kg/IBC |
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