DOWSIL DK Q1-1247 is a 30% active nonionic siloxane defoamer emulsion for water-soluble metalworking fluids and water-based coatings/inks. As milky liquid (1,000 mPa·s viscosity), it stays active at pH 8 and ≤100°C, has 21.0 dyn/cm dynamic surface tension (0.5% solution), curbs cutting fluid foam (6+ hours suppression), boosts coating gloss uniformity, collapses bubbles in ≤5 minutes (nano silicone particles), works with anionic/nonionic surfactants, and allows 1:5 pre-dilution.
Wide-Range Effectiveness: Acts on micron-to-millimeter bubbles, suitable for high-shear processes like metal cutting and coating dispersion.
Tough Condition Resistance: Endures pH 8 alkalinity and 100°C heat without performance drop in circulating systems.
Economical & Eco-Friendly: Uses 0.05%-0.3% dosage, VOC <50g/L, and meets EU REACH and China GB 24408 standards.
Metalworking: Manages foam in cutting fluids/quenching oils, lowering machine corrosion (0.1%-0.5% dosage).
Water-Based Coatings: Removes roller marks in epoxy/coil coatings to achieve smooth finishes.
Printing Inks: Lessens streaks in flexo/gravure inks for clear, sharp patterns.
Industrial Cleaning: Curbs foam in high-pressure cleaners to enable efficient rinsing.
Type | Nonionic siloxane defoamer emulsion |
Appearance | Milky liquid |
Active Content | 30% silicone |
Dynamic Viscosity | 1,000 mPa·s |
Flash Point (closed cup) | >100°C |
pH Value | 8 |
Surface Tension (0.5% solution) | 21.0 dyn/cm |
Recommended Dosage | 0.05%-0.3% (on total system) |
Packaging | 25kg/drum or 200kg/IBC |
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E-mail: wangxingqiang@ericwchem.com
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