FOAMSTAB 2772
High-efficiency defoamer for solvent-free and high-build epoxy, polyurethane, and unsaturated polyester systems. Superior de-aeration in thick films.
Key Performance Benefits
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Thick Film De-aeration
Rapidly releases entrapped air pockets from thick coating films (>1 mm) before resin gelation, producing smoother and more uniform finishes. -
Thermoset Versatility
Delivers outstanding performance across 2K solvent-free epoxy, polyurethane, and unsaturated polyester (UPR) gelcoat formulations. -
Sub-surface Void Reduction
Eliminates micro-cavities and entrapped air that can reduce mechanical strength, durability, and barrier performance. -
Smooth Film Profile
Produces flat, defect-free leveling in heavily filled self-smoothing floorings, screeds, and high-build coating systems.
Recommended Applications
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Epoxy Floor Systems
Self-leveling 2K epoxy toppings, industrial floor coatings, and epoxy mortar systems. -
UPR & Gelcoats
Unsaturated polyester laminating resins, gelcoat formulations, and fiberglass composite applications. -
Polyurethane Resins
Solvent-free elastomeric toppings, potting and encapsulation compounds, and polyurethane sealers. -
High-Build Coatings
Thick protective linings, anticorrosive coatings, storage tank linings, and barrier coating systems.
Typical Physical Properties
| Property Parameter | Test Specification / Unit |
|---|---|
| Chemical Description | Polymeric defoamer compound in organic carrier |
| Active Content | 100% Active Concentrate |
| Appearance | Clear to light yellow liquid |
| Density (20°C) | 0.89 – 0.94 g/cm³ |
| Viscosity (25°C) | Low-viscosity liquid for rapid mixing |
Dosage & Processing Guidelines
The recommended addition level for FOAMSTAB 2772 is 0.1% to 0.8% calculated on the total formulation weight.
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Grind Phase
Pre-blend 50–60% into Resin Component A during high-shear filler incorporation for effective initial de-aeration. -
Let-down / Final Blend
Add the remaining dosage before curing agent incorporation to maximize air release and bubble extraction. -
Polyester Systems
Incorporate before initiator and promoter dosing to achieve optimum de-aeration performance in polyester formulations.
💡 Formulator Insight & Lab Tip
In thick self-leveling epoxy coatings and UPR gelcoats, air bubbles become trapped as viscosity increases during cure. FOAMSTAB 2772 reduces interfacial surface tension at the gas-liquid boundary, forcing microfoam to migrate to the film surface rapidly and break without leaving craters or fisheyes.
Related Technical Articles & Case Studies
Mastering De-aeration in High-Build Epoxy Flooring
Formulation strategies to eliminate pinholes and sub-surface air pockets in thick self-leveling screeds and industrial flooring systems.
Read ArticleEliminating Voids and Air Bubbles in UPR Gelcoats
Learn how polymeric defoamers improve surface durability, gloss retention, and air-release performance in unsaturated polyester composites.
Read ArticleSolvent-Free Polyurethane Coatings & Degassing Efficiency
Evaluate de-aeration speed versus resin viscosity to achieve defect-free thick elastomeric and protective coating applications.
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