Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

TEGO Foamex 7447 Defoamer

TEGO Foamex 7447 is a German-origin defoamer, formulated as a 100% active silicone silicone-free concentrate. Engineered with advanced thermo-mechanical properties to secure a competitive edge, it appears as a clear to slightly hazy liquid with a viscosity of 150-500 mPa·s. It demonstrates universal compatibility in solvent-borne, solvent-free, and radiation-curing systems, achieving ≥99.9% microfoam elimination at a dosage of 0.02%-0.08%. Certified by REACH, ISO 9001, and GB 30981-2020, it enhances clarity (haze ≤0.3%) and leveling (orange peel Ra≤0.08 μm) in varnish systems and high-speed flow coating (≥50 m/min).

Features Of TEGO Foamex 7447 Defoamer

  1. Zero Silicone Risk: Passes FTIR/GC-MS residue tests with no migration detected, eliminating concerns of silicone-related defects or contamination in sensitive applications.

  2. Universal Compatibility: Maintains stability in 30-100% solid epoxy/acrylic/PU systems, adapting to a wide range of formulation requirements across different resin types.

  3. Instant Defoaming: Features 0.12 μm active particles that eliminate bubbles in 1 second (per ASTM D892-XVII standards), ensuring rapid and efficient foam control.

Typical Applications Of TEGO Foamex 7447 Defoamer

  1. Premium Piano Lacquers: Achieves a DOI (Distinctness of Image) ≥99 in ≥85% solid polyester-amide varnishes, ensuring a high-gloss, mirror-like finish for premium musical instrument coatings.

  2. LED-UV Wood Coatings: Controls yellowing (Δb*≤0.2) at high flow coating speeds of 80 m/min, preserving color stability in UV-cured wood coatings.

  3. Optical Electronic Films: Maintains ≥98.5% transmittance in acrylic UV adhesives (with a refractive index of 1.48-1.52), preserving optical clarity for electronic film applications.

Specifications Of TEGO Foamex 7447 Defoamer

Type
Silicone-free polymer defoaming concentrate
Appearance
Clear to slightly hazy liquid
Active Content
Proprietary polymer composite (100%)
Dynamic Viscosity
150-500 mPa·s
Compatible Systems
Solvent/solvent-free/radiation-curing
Density
0.96-1.02 g/cm³
Surface Tension
19.2 dyn/cm
Flash Point (PMCC)
≥80°C (solvent systems)
Recommended Dosage
0.02%-0.08% (by total weight)
Shelf Life
36 months (sealed, 5-40°C)
Packaging
25kg/galvanized drum or 200kg/IBC tot


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