DOWSIL FS 1277 is a fluorosilicone defoamer with advanced thermo-mechanical properties to boost your competitiveness. It is a transparent liquid (1,000-3,000 mPa·s viscosity) that performs stably at ≤150°C and pH 2-12, enabling rapid bubble suppression in high-shear coatings and cleaning systems. Certified by ISO 9001 and REACH, it cuts coating defects by 40% versus conventional defoamers while increasing gloss by 18%.
Fluorosilicone Hybrid Advantage: Fluorocarbon-siloxane structure lowers surface tension by 50% compared to standard silicones.
Strong Process Adaptability: Stays stable in 150°C environments and under high-pressure spraying (≥50 bar).
Chemical Stability: Does not react with epoxy or polyurethane curing systems.
Eco-Friendly Compliance: Free of APEO and VOC, meeting GB 18582-2020 standards.
Cost-Saving Performance: Delivers 12% cost savings when used at 0.05%-0.3% dosage.
Waterborne Coatings: Eliminates microbubbles in roller and spray processes (0.1%-0.5% dosage).
UV Inks: Controls foam in photopolymerizable inks (with 200-500 mPa·s viscosity).
Cosmetic Emulsions: Reduces bubbles in O/W systems during 60°C homogenization.
Industrial Cleaners: Suppresses foam in pH 12 alkaline degreasers.
Paper Sizing: Boosts surface smoothness by 35% in starch sizing agents.
Type | Fluorosilicone defoamer |
Appearance | Colorless to pale-yellow liquid |
Active Content | Fluorosiloxane polymer (100%) |
Dynamic Viscosity | 1,000-3,000 mPa·s |
pH Range | 2-12 |
Surface Tension | 21.5 dyn/cm |
Flash Point | >150°C (closed cup) |
Thermal Stability | No stratification (150°C/24h) |
Recommended Dosage | 0.05%-0.3% (by total weight) |
Shelf Life | 360 days (sealed, 5-35°C) |
Packaging | 20kg/PE drum or 200kg/IBC tote |
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E-mail: wangxingqiang@ericwchem.com
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