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Highly efficient trimer-based curing agent delivering rapid crosslinking at ambient to moderate temperatures.
Excellent compatibility with aliphatic and aromatic polyisocyanates, enabling broad formulation flexibility.
Low viscosity and high solubility in common organic solvents, facilitating homogeneous mixing and stable coating formulations.
Enhanced chemical resistance and UV stability in cured films, supporting durable performance in demanding environments.
Non-yellowing character ideal for clearcoats and light-colored industrial coatings requiring long-term color retention.
Automotive OEM and refinish clearcoats and basecoats.
Industrial maintenance coatings for metal substrates and machinery.
High-performance wood finishes requiring hardness and gloss retention.
Plastic coatings for automotive interior parts and consumer electronics housings.
Powder coating topcoats where low-bake cure profiles are required.
| Chemical Type | Trimerized hexamethylene diisocyanate (HDI trimer) |
| Product Form | Liquid |
| Appearance | Colorless to pale yellow transparent liquid |
| Functionality | ~3.0 (average nominal functionality) |
| NCO Content (wt%) | 15.8–16.2% |
| Viscosity (25°C, mPa·s) | 1,800–2,400 |
| Density (25°C, g/cm³) | 1.12–1.15 |
| VOC Content | <100 g/L (compliant with EU 2004/42/EC, Category A/e) |
Q1: What is the primary function of BG-60T in coating and adhesive formulations?
A: BG-60T 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-60T compatible with aliphatic and aromatic polyisocyanate systems?
A: BG-60T is formulated for optimal compatibility with aliphatic isocyanate prepolymers and trimers, particularly in high-performance, UV-stable coatings. Compatibility with aromatic systems is possible but may require formulation adjustment and compatibility testing due to differing reactivity and yellowing tendencies.
Q3: How does BG-60T affect pot life and cure speed compared to conventional curing agents?
A: As a trimer-type curing agent, BG-60T offers a balanced reactivity profile—providing extended pot life at ambient temperatures while enabling efficient curing at elevated temperatures (e.g., 80–120 °C). Cure speed is formulation-dependent but generally faster than monomeric isocyanates and more controllable than highly reactive biuret variants.
Q4: What storage conditions are recommended to maintain BG-60T stability?
A: Store BG-60T in tightly sealed containers under dry, cool conditions (below 30 °C) and protect from moisture, direct sunlight, and prolonged exposure to ambient humidity. Prolonged storage above 35 °C or in humid environments may lead to viscosity increase or gelation over time.
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