Non-isocyanate, moisture-curing polymer offering excellent adhesion to diverse substrates without primers.
Low VOC and solvent-free formulation compliant with stringent environmental and occupational health regulations.
Superior elasticity and long-term durability under thermal cycling, UV exposure, and weathering conditions.
Easy processing—compatible with standard sealant and adhesive manufacturing equipment, including twin-screw extruders.
Hydrolytically stable silane end-groups ensure consistent shelf life and reliable in-use performance.
High-performance construction sealants for façade, curtain wall, and expansion joint applications.
Automotive assembly adhesives for bonding trim, emblems, and interior modules.
Industrial bonding solutions for metal, glass, and composite substrates in appliance and transportation sectors.
Renewable energy applications including PV module encapsulation and wind turbine blade bonding.
| Chemical Type | Silane-terminated polyether (STP) |
| Product Form | Paste-like, viscous liquid |
| Appearance | Pale yellow to colorless, transparent to slightly hazy |
| Primary Applications | Sealants, structural adhesives, and hybrid polymer formulations |
| Key Features | Moisture-curing, non-isocyanate, low modulus, high elongation |
| Benefits | No primer required, excellent adhesion to low-energy surfaces, minimal shrinkage |
| Storage Stability | ≥12 months at ≤25 °C in sealed original packaging |
| VOC Content | <5 g/L (EN ISO 11890-2) |
Q1: What is the primary function of GENIOSIL STP in adhesive and sealant formulations?
A: GENIOSIL STP acts as a reactive silane-modified polymer that serves as both a binder and crosslinker, enabling one-component, moisture-curing systems without the need for traditional isocyanate chemistry. It imparts excellent adhesion to diverse substrates, good elasticity, and long-term durability.
Q2: How does GENIOSIL STP differ from conventional polyurethane or silicone polymers?
A: Unlike polyurethanes, GENIOSIL STP contains no isocyanates—eliminating associated health and handling concerns. Compared to silicones, it offers superior paintability, better adhesion to low-energy surfaces, and reduced volatility during curing, while maintaining high flexibility and weather resistance.
Q3: Can GENIOSIL STP be used in solvent-free or low-VOC formulations?
A: Yes—GENIOSIL STP is inherently low in volatility and fully compatible with high-solids, solvent-free, and waterborne hybrid systems. It supports formulators in meeting stringent VOC regulations without compromising performance or processing behavior.
Q4: What types of additives or fillers are typically compatible with GENIOSIL STP?
A: GENIOSIL STP demonstrates broad compatibility with common fillers (e.g., calcium carbonate, fumed silica), plasticizers (e.g., non-phthalate esters), and rheology modifiers. Compatibility with specific additives should be verified experimentally, as reactivity and dispersion stability may vary depending on formulation pH and surface treatment.
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