DOW DOWSIL PulpAid 3379 Concentrate is a 100% active silicone defoamer made for the pulp and paper sector. Boasting optimized thermal-mechanical properties, it lowers pulp slurry viscosity by 40% at 0.01%-0.2% dosage, outperforming mineral oil-based alternatives. Certified by ISO 9001 and REACH, this milky homogeneous liquid (900-1,500 mPa·s viscosity) works stably at pH 1-14 and ≤150°C, enabling quick bubble collapse in high-pressure pulping processes.
Wide pH Resistance: Functions effectively in kraft pulping black liquor (pH 14) and acid bleaching systems.
Self-Dispersing Ability: Nano silicone particles (D50≤5 μm) spread evenly without needing emulsifiers.
Food-Grade Compliance: Meets FDA 21 CFR 176.170 standards for food-grade paper manufacturing.
Cost-Saving Advantage: Cuts defoaming cost per ton of pulp by 25%, with 6-month dilution stability.
Eco-Friendly Safety: Features over 90% biodegradability (per OECD 301B) and an APEO-free formula.
Pulp Digestion: Manages foam in 160-170°C kraft cooking, minimizing fiber loss.
Paper Machine Whitewater: Eliminates bubbles in 1,800 m/min forming sections.
Wastewater Treatment: Reduces sludge volume in high-COD effluent (≥20,000 mg/L).
Recycled Paper Deinking: Boosts deinking efficiency by 15% in alkaline systems.
Starch Coating: Removes defects in 90°C high-speed coating processes.
Type | Silicone defoamer |
Appearance | Milky homogeneous liquid |
Active Content | Polydimethylsiloxane + hydrophobic silica (100%) |
Dynamic Viscosity | 900-1,500 mPa·s |
pH Range | 1-14 |
Surface Tension | 21.8 dyn/cm |
Flash Point | >150°C (closed cup) |
Thermal Stability | No stratification (150°C/24h) |
Recommended Dosage | 0.01%-0.2% |
Shelf Life | 540 days (sealed, 5-40°C) |
Packaging | 200kg/PE drum or 1-ton IBC tote |
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E-mail: wangxingqiang@ericwchem.com
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