TEGO Foamex 815N is a German-origin defoamer, formulated as a polyether-silicone/fumed silica emulsion. Engineered with advanced thermo-mechanical properties to secure a competitive edge, it appears as a milky homogeneous liquid with a viscosity of 200-550 mPa·s. It demonstrates universal compatibility in solvent-borne, solvent-free, and radiation-curing systems, achieving ≥99.5% microfoam elimination at a dosage of 0.05%-0.2%. Certified by REACH, ISO 9001, and GB 30981-2020, it enhances transparency (haze ≤0.25%) and leveling (orange peel Ra≤0.06 μm) in premium varnish systems and high-speed flow coating (≥70 m/min).
Universal Compatibility: Maintains stability in 25-100% solid epoxy/acrylic/PU systems, adapting to a wide range of formulation solid contents and resin types, ensuring versatility across applications.
Zero Silicone Risk: Passes FTIR/TOF-SIMS residue tests with no migration detected, eliminating concerns of silicone-related defects (e.g., craters, fisheyes) that could compromise surface quality.
Instant Defoaming: Features 0.18 μm hybrid particles that eliminate bubbles in 0.8 seconds (per ASTM D892-XVIII standards), delivering rapid and efficient foam control for high-precision processes.
Piano Lacquers: Achieves a DOI (Distinctness of Image) ≥99 in ≥90% solid polyester-amide varnishes, ensuring a flawless, mirror-like finish for premium musical instrument coatings.
Automotive Clearcoats: Maintains color stability (ΔE≤0.3) after 3,000 hours of QUV testing at flow coating speeds ≥100 m/min, preserving long-term finish quality in automotive clear coatings.
Optical Adhesives: Ensures ≥98.8% transmittance in UV acrylics (with a refractive index of 1.45-1.50), preserving optical clarity for precision bonding applications.
Type | Polyether-silicone/fumed silica emulsion |
Appearance | Milky homogeneous liquid |
Active Content | Polyether-silicone + fumed silica (20%) |
Dynamic Viscosity | 200-550 mPa·s |
Compatible Systems | Solvent/solvent-free/radiation-curing |
Density | 1.02-1.10 g/cm³ |
Surface Tension | 21.5 dyn/cm |
Shear Stability | ≥98% activity retention after ≥10^4 s⁻¹ shear |
Addition Stage | Grinding or letdown phase |
Shelf Life | 36 months (sealed, 5-40°C) |
Packaging | 25kg/galvanized drum or 200kg/IBC tote |
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E-mail: wangxingqiang@ericwchem.com
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