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Highly reactive aliphatic trimer-based curing agent for rapid room-temperature cure.
Excellent chemical resistance to solvents, acids, and alkalis after full crosslinking.
Low viscosity (250–350 cP at 25°C) enables easy handling and homogeneous blending with epoxy resins.
Non-yellowing formulation ensures long-term clarity and color stability in transparent coatings.
Low free isocyanate content (<0.3%) enhances workplace safety and regulatory compliance.
Two-component polyurethane clearcoats for automotive OEM and refinish applications.
High-performance industrial floor coatings requiring abrasion and chemical resistance.
UV-resistant protective topcoats for architectural metal and concrete substrates.
Electronics encapsulation systems demanding low outgassing and thermal stability.
Marine-grade antifouling and corrosion-resistant coating systems.
| Chemical Type | Aliphatic isocyanurate trimer |
| Product Form | Liquid |
| Appearance | Colorless to pale yellow transparent liquid |
| Functionality | ~3.0 (average NCO functionality) |
| NCO Content | 18.5–19.2 wt% |
| Density (25°C) | 1.18–1.22 g/cm³ |
| Viscosity (25°C) | 250–350 cP |
| Storage Stability | 12 months unopened at <25°C, dry conditions |
Q1: What is the primary function of BG-450TB in coating and adhesive formulations?
A: BG-450TB is a trimer-based curing agent designed to react with hydroxyl- or amine-functional resins—such as polyols or polyamines—to form highly crosslinked, thermoset networks. It enhances chemical resistance, hardness, and thermal stability in final cured films.
Q2: Is BG-450TB compatible with waterborne systems?
A: Yes, BG-450TB exhibits good compatibility with many waterborne polyurethane dispersions (PUDs) and acrylic-polyol emulsions. Its low volatility and controlled reactivity support stable dispersion and reduced premature gelation during storage and application.
Q3: How does BG-450TB compare to conventional HDI or IPDI trimers in terms of pot life and cure speed?
A: BG-450TB offers extended pot life relative to standard aliphatic isocyanate trimers due to its sterically hindered trimer structure, while still enabling efficient ambient- or heat-assisted cure. Final film development balances handling time with robust performance build-up.
Q4: What safety and handling precautions should be observed?
A: As with all isocyanate-containing materials, BG-450TB requires handling in well-ventilated areas with appropriate PPE—including nitrile gloves, safety goggles, and respiratory protection when aerosol or vapor exposure is possible. Avoid contact with moisture during storage to prevent gelation or CO₂ evolution.
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