Close
FOAMSTAB 5550 is a high-performance, silicone-free polymer-based defoamer and air-release additive designed to eliminate entrapped air, micro-bubbles, pinholes and internal voids in coating and resin systems. It is engineered for applications where surface clarity, gloss uniformity and defect-free films are critical—especially in natural stone coatings applied on marble, granite, sandstone, terrazzo and engineered stone.
In natural stone epoxy, acrylic, unsaturated polyester resin (UPR) and PU coating systems, air entrapment can occur during mixing, rolling, brushing or spraying, as well as from micro-pores within the stone surface. FOAMSTAB 5550 efficiently releases trapped air before film curing, resulting in smooth, pore-free, crystal-clear coatings with enhanced aesthetic appeal.
Being silicone-free, FOAMSTAB 5550 avoids common issues associated with silicone defoamers such as intercoat adhesion problems, surface slip defects or recoat sensitivity, making it particularly suitable for multi-layer stone coating systems and premium architectural finishes. The product is effective across a wide range of resin chemistries and processing conditions, from ambient-curing systems to higher-viscosity formulations .
Zeolite Silver Antimicrobial Powder/ Ag-Zeolite Powder
1318-02-1
215-283-8
3824.99.00
not classified as dangerous goods
2.1–2.3 g/cm³
4–5
0.1%
Marble clear coatings
Granite and engineered stone coatings
Sandstone, Kota stone and terrazzo
Concrete and cementitious decorative surfaces
Epoxy clear coats (stone protection, flooring, decorative sealers)
Acrylic clear and pigmented coatings)
Unsaturated Polyester Resins (UPR) for stone composites and overlays)
Polyurethane (PU) coatings for abrasion-resistant and high-gloss finishes)
Vinyl ester systems (where silicone-free air release is required)
| Parameter | Unit | Specification |
|---|---|---|
| Product Type | — | Silicone-free polymeric defoamer |
| Chemistry | — | Hydrophobic polymer blend (typical) |
| Recommended Systems | — | Solvent-borne alkyd, PU, epoxy, acrylic, NC, CAB, industrial coatings, inks, adhesives |
| Physical Form | — | Clear to hazy viscous liquid |
| Color | — | Colorless to pale amber |
| Odor | — | Mild / characteristic |
| Non-Volatile Matter (NVM) | % (w/w) | ≥ 90.0 |
| Active Content | % (w/w) | ≥ 90 (typically same as NVM) |
| Carrier / Solvent | — | Minimal / low solvent (low VOC design) |
| Density (25°C) | g/cm³ | 0.90 – 1.05 |
| Viscosity (Brookfield, 25°C) | mPa·s (cP) | 500 – 2000 |
| Flash Point (Closed Cup) | °C | > 60 (typical; depends on carrier) |
| Water Content (KF) | % | ≤ 0.5 |
| Solubility / Compatibility | — | Compatible with aromatic/aliphatic hydrocarbons, esters, ketones, glycol ethers (trial recommended) |
| Dispersion Behavior | — | Self-dispersing under low shear; best addition under stirring |
| Foam Knockdown | — | Excellent |
| Deaeration / Microfoam Release | — | Very good |
| Surface Defect Risk | — | Low risk of fish-eyes compared to silicones; trial recommended for high gloss clears |
| Recommended Dosage (as supplied) | % | 0.05 – 0.50 on total formulation |
| Typical Addition Stages | — | Grind and/or let-down; can be post-added for correction |
Exact dosage depends on resin type, viscosity, filler level and application method.
0.10% – 0.50% on total formulation
Clear coats on natural stone
Up to 0.50%
Add to the resin or polyol component before hardener addition
Add during resin make-up or let-down stage