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Highly reactive trimerized isocyanurate structure enabling rapid cure at ambient and elevated temperatures.
Excellent weather resistance and UV stability due to fully aliphatic backbone—no yellowing over time.
Low viscosity (150–250 mPa·s at 25°C) ensures easy handling, precise metering, and homogeneous blending with polyols.
Superior chemical resistance against solvents, acids, and alkalis in cured polyurethane coatings and elastomers.
Meets REACH and RoHS compliance requirements with no added solvents or heavy-metal catalysts.
High-performance two-component polyurethane topcoats for automotive OEM and refinish applications.
Durable protective coatings for industrial flooring, concrete sealers, and tank linings.
UV-stable elastomeric coatings used in architectural membranes and roofing systems.
Clear overcoats for wood finishes requiring gloss retention and scratch resistance.
Adhesives and sealants demanding fast fixture time and long-term flexibility.
| Chemical Type | Aliphatic isocyanurate trimer (HDI-based) |
| Product Form | Liquid |
| Appearance | Colorless to pale yellow transparent liquid |
| NCO Content (wt%) | 18.5–19.2% |
| Viscosity (mPa·s at 25°C) | 150–250 |
| Density (g/cm³ at 25°C) | 1.14–1.17 |
| Flash Point (°C, closed cup) | 135–142 |
| Storage Stability | 12 months unopened at 15–25°C; protect from moisture and direct sunlight |
Q1: What is the primary chemical functionality of BG-650TB?
A: BG-650TB is a trimerized isocyanurate-based curing agent derived from aliphatic isocyanates, offering excellent thermal stability, UV resistance, and low volatility compared to monomeric or dimeric alternatives.
Q2: Which resin systems is BG-650TB typically compatible with?
A: It is primarily designed for use with hydroxyl-functional acrylics, polyesters, and alkyds in high-performance two-component coatings, especially where weatherability and chemical resistance are critical.
Q3: How does BG-650TB influence pot life and film formation in coating formulations?
A: As a trimerized system, BG-650TB provides extended pot life at ambient temperatures while enabling efficient crosslinking upon mild heating or ambient cure over time, supporting good flow and film integrity without excessive brittleness.
Q4: Is BG-650TB suitable for low-VOC or high-solids coating applications?
A: Yes — its low volatility and high functionality make it well-suited for low-VOC and high-solids formulations, helping reduce solvent demand while maintaining robust crosslink density and performance.
Q5: What handling precautions should be observed during formulation?
A: Standard industrial hygiene practices apply: avoid inhalation of mists or vapors, prevent skin and eye contact, and use appropriate PPE. Store in tightly sealed containers under dry, cool conditions to maintain reactivity and shelf life.
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