Features: HDI Trimer, High Crosslink Density, Low Free HDI
Application: Wood & Furniture, Automotive OEM & Refinish, Floor Coatings, Coatings
| Parameter | Value |
|---|---|
| Product Type | Aliphatic HDI Trimer |
| Solid Content | 100% |
| NCO Content | 22.0 ± 0.5% |
| Free Monomer | HDI ≤ 0.3% |
| Viscosity | 3250 ± 750 cps at 25°C, rotational viscometer |
| Carrier / Solvent | None (100% solids) |
Specifications are based on Dongsen’s current approved product data source.
HDX-100 can be used as the polyisocyanate hardener in 2K acrylic polyurethane clearcoat and primer formulations for automotive refinish.
Final suitability should be evaluated with the customer’s actual resin system, formulation, application process and curing conditions.
When to Consider HDX-100
Consider HDX-100 for 2K PU automotive refinish formulations when an aliphatic HDI-trimer hardener and a hardness / high-crosslink-density formulation direction are required.
Confirmed Selection Signals
Refer to Technical Data for the complete numeric specification.
Related Grade Direction
HDX-175MPX may also be reviewed where an HDI biuret direction with flexibility and adhesion emphasis is more relevant. Final selection should be confirmed in the customer’s formulation.
Ask Dongsen for Grade Selection Support
Share your resin system, application method and target performance so Dongsen can help define an appropriate starting grade for evaluation.
Dongsen has a verified automotive refinish guiding formulation using HDX-100 with 2K acrylic clearcoat and primer systems.
Guiding Formulation Starting Points
These ratios are formulation starting points from the verified guiding formulation, not universal HDX-100 mixing ratios. Actual stoichiometry and addition level must be calculated for the customer’s resin system.
Force-dry / Bake Evaluation Reference
HDX-100 has been internally evaluated under controlled 60–80°C bake conditions. This range describes test conditions and should not be treated as a mandatory curing schedule.
Confirm the formulation ratio, resin compatibility and curing process before production use.
What is HDX-100?
HDX-100 is a 100% solids aliphatic HDI trimer polyisocyanate hardener. Refer to Technical Data for the current NCO, free HDI and viscosity specifications.
What is the confirmed application direction for HDX-100?
Dongsen has verified HDX-100 in guiding formulations for 2K acrylic automotive refinish clearcoat and primer systems.
Does Dongsen provide formulation support for HDX-100?
Yes. Dongsen has an automotive refinish guiding formulation for HDX-100. Final ratios and compatibility should be evaluated with the customer’s own resin system.
What force-dry or bake conditions have been evaluated for HDX-100?
Internal evaluation covered controlled conditions within a 60–80°C range. These are test conditions rather than a universal curing recommendation; the actual schedule depends on the complete formulation and process.
What is the current TDS status for HDX-100?
Public release of the HDX-100 Technical Data Sheet is currently under review. Contact Dongsen to confirm the current document status.
