English
Español
tiếng việt
русский
Low-viscosity liquid trimer offering excellent storage stability and extended pot life.
High functionality and reactivity with hydroxyl-terminated polyols for robust polyurethane network formation.
Low monomer TDI content (< 0.1 wt%), meeting stringent occupational health and safety requirements.
Good compatibility with aromatic and aliphatic polyols, enabling formulation flexibility.
Enables production of coatings and adhesives with superior chemical resistance and mechanical strength.
High-performance two-component polyurethane coatings for industrial metal finishing.
Automotive refinish clearcoats requiring fast cure, gloss retention, and scratch resistance.
Flexible and rigid PU adhesives used in composite lamination and automotive interior bonding.
UV-resistant elastomeric sealants for architectural and transportation applications.
Roller and spray-applied floor coatings demanding rapid throughput and abrasion resistance.
| Chemical Type | TDI-based isocyanurate trimer |
| Product Form | Liquid |
| Appearance | Colorless to pale yellow transparent liquid |
| NCO Content (wt%) | 15.5 – 16.5 |
| Viscosity at 25°C (mPa·s) | 800 – 1,200 |
| Specific Gravity (25°C) | 1.18 – 1.22 |
| Monomeric TDI Content | < 0.1 wt% |
| Storage Stability | Stable for ≥12 months at 25°C in sealed container |
Q1: What is the primary chemical composition and functional role of Mitsui D-208T?
A: Mitsui D-208T is a trifunctional isocyanurate-type curing agent derived from toluene diisocyanate (TDI). It functions as a crosslinker in polyurethane systems, providing enhanced thermal stability, chemical resistance, and mechanical strength due to its highly branched trimeric structure.
Q2: Which types of resin systems is D-208T typically compatible with?
A: D-208T is primarily designed for use with hydroxyl-functional resins, including polyester polyols, acrylic polyols, and polyether polyols. It is widely employed in high-performance two-component polyurethane coatings, adhesives, and elastomers where rapid cure and excellent film hardness are required.
Q3: How does D-208T compare to other TDI-based trimers in terms of viscosity and handling?
A: D-208T exhibits relatively low to moderate viscosity compared to many aromatic trimer curing agents, facilitating easier metering, mixing, and processing in industrial coating lines. Its consistent liquid state at ambient temperatures supports stable storage and simplified formulation without preheating requirements.
Q4: What are key storage and handling recommendations for D-208T?
A: Store in tightly sealed containers under dry, cool conditions (preferably below 30°C) and protect from moisture, direct sunlight, and strong oxidizing agents. As with all isocyanates, appropriate personal protective equipment—including gloves, goggles, and respiratory protection—should be used during handling to minimize exposure risks.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
