TDI Trimer Adduct Hardener
CAS Number: 26603-40-7
TDI trimer adduct hardener is an aromatic polyisocyanate used as a cost-effective hardener for two-component polyurethane wood coatings. It provides excellent adhesion, hardness, and chemical resistance. Due to its aromatic structure, it is best suited for opaque or dark-colored wood finishes where slight yellowing is acceptable.
Technical Specifications
| appearance | Clear amber to brown liquid |
| NCO content | 13.0–14.5% |
| solid content | 75% in ethyl acetate |
| equivalent weight | 290–310 g/eq |
| viscosity (25°C) | 1,500–4,000 mPa·s |
Applications
- Pigmented 2K PU coatings for wood furniture
- Dark-colored wood floor coatings
- Industrial wood primers and sealers
- PU adhesives for furniture assembly
- Cost-sensitive interior wood coatings
Key Features
- Cost-effective aromatic isocyanate for opaque systems
- High reactivity for faster cure at ambient temperature
- Excellent adhesion and chemical resistance
- Good compatibility with polyester and acrylic polyols
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CAS Number
26603-40-7
Category
Wood / Furniture CoatingsAvailability
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