HDI Uretdione (Dimer) Crosslinker for Powder Coatings
CAS 12779-90-7
In StockMOQ
100 kg
Lead Time
10–15 days
Packaging
25 kg PE bags
Specifications
| Functionality | ~2 |
| Melting Point | 78–88°C |
| Free Monomer HDI | <0.1% |
| Deblocking Temperature | 150–165°C |
| NCO Content (blocked equivalent) | 18.0–19.5% |
FAQ
Uretdione crosslinkers are internally blocked — the NCO groups exist as cyclic dimers that reopen on stoving without releasing any external blocking agent (no MEKO or caprolactam byproduct). This results in lower VOC emissions, no foaming risk, and cleaner post-cure outgassing — critical for automotive powder clear coats.
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