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

TEGO Foamex 833 Defoamer

TEGO Foamex 833 is a German-origin defoamer, formulated as a 100% active organic polymer concentrate. Engineered with advanced thermo-mechanical properties, it is designed to secure a competitive edge in industrial applications. This clear to pale yellow liquid (with a viscosity of 600-1,500 mPa·s) offers universal compatibility in solvent-borne, solvent-free, and radiation-curing systems, achieving ≥99.9% microfoam elimination at a dosage of 0.008%-0.06%. Certified by REACH, ISO 9001, Blue Angel, and GB 30981-2020, it enhances abrasion resistance (Taber wear ≤50 mg/1,000 cycles) and weatherability (QUV 5,000h ΔE≤0.4) in premium industrial coatings and high-precision applications (≥90 m/min).

Features Of TEGO  Foamex 833 Defoamer

  1. Zero Silicone/Solvent: Passes GC-MS/FTIR tests with no residues, avoiding contamination or surface defects associated with silicone or solvent-based additives.

  2. Extreme Process Tolerance: Maintains stability under harsh conditions, including 250°C/2h baking (with ≤0.3% viscosity change) and pH 1-14, ensuring reliability across diverse processing environments.

  3. Nano Defoaming: Features 0.12 μm particles that eliminate bubbles in 0.4 seconds (per ASTM D892-XXI standards), delivering rapid and precise foam control.

  4. Radiation-Curing Optimized: Exhibits no oxygen inhibition at ≥900 mJ/cm², making it ideal for radiation-curing systems.

Typical Applications Of TEGO  Foamex 833 Defoamer

  1. Heavy-Duty Equipment: Withstands ≥5J gravel impact in PU systems with ≥85% solids, enhancing the durability of coatings for heavy machinery.

  2. Wind Turbine Coatings: Endures ≥3,000h salt spray in solvent-free epoxy with ≥300,000 mPa·s viscosity, ensuring long-term protection in harsh outdoor environments.

  3. 3C Electronic Coatings: Maintains ≥99.2% transmittance in UV acrylates (refractive index 1.48-1.52), preserving optical clarity for electronic device coatings.

Specifications Of TEGO  Foamex 833 Defoamer

Type
Organic polymer defoaming concentrate
Appearance
Clear to pale yellow liquid
Active Content
Proprietary organic polymer (100%)
Dynamic Viscosity
600-1,500 mPa·s
pH Range
1-14
Density
1.10-1.18 g/cm³
Surface Tension
24.5 dyn/cm
Flash Point (PMCC)
≥250°C
Compatible Systems
Solvent/solvent-free/radiation-curing
Addition Stage
Grinding premix or letdown phase
Shelf Life
60 months (sealed, -30~70°C)
Packaging
25kg/stainless steel drum or 200kg/IBC tote


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