Features: 90% Solids, HDI Trimer, Low Free HDI, Lightfast
Application: Automotive OEM & Refinish, Can&Coil Coatings
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| Property | HDX-190 |
|---|---|
| Product Type | HDI Trimer (Aliphatic) |
| Solid Content | 90 ± 1 % |
| NCO Content | 19.8 ± 0.5 % |
| Free Monomer (HDI) | ≤ 0.3 % |
| Viscosity (25 °C) | 525 ± 75 cps (rotational viscometer) |
Specifications are based on Dongsen’s current approved product data source.
HDX-190 can be used as an aliphatic HDI trimer polyisocyanate hardener in 2K polyurethane automotive coating formulations. This application direction is intended for formulators evaluating HDI-trimer chemistry for lightfast automotive coating systems.
Final suitability should be confirmed in the customer’s actual resin system, mixing ratio, application method and curing conditions.
HDX-190 can also be evaluated as a polyisocyanate hardener in 2K polyurethane topcoat formulations applied to outdoor steel components and fabricated steel structures.
Application Boundary
This application direction refers to the polyurethane topcoat formulation. It does not by itself establish anti-corrosion performance, corrosion-protection classification, guaranteed outdoor service life or the performance of a complete protective coating system.
Final suitability should be evaluated with the customer’s actual substrate preparation, primer system, coating formulation, application process and exposure conditions.
HDX-190 also has a real-world application case available for technical reference.
Evidence Status: Reference Only.
This field-use case supports technical discussion and evaluation of HDX-190 in an actual coating application, but it does not establish a universal performance claim, guaranteed service life, formal comparative claim or guaranteed result for another formulation.
Final suitability should be evaluated in the customer’s actual coating formulation, substrate preparation, application process and exposure conditions.
For reference only. Product-specific technical validation is required.
Consider HDX-190 when a 2K polyurethane formulation requires an aliphatic HDI trimer crosslinker and the application direction is automotive coatings or polyurethane topcoats for outdoor steel.
HDX-190 combines HDI trimer chemistry with a high-solids profile and low free HDI monomer. Refer to the Technical Data tab for the confirmed numeric specifications rather than using this section as a second specification table.
The current application directions are automotive coating formulations and outdoor steel polyurethane topcoats. The final grade decision should be verified against the customer’s resin, target coating properties and processing conditions.
HDX-100 and HDX-175MPX may also be reviewed as related HDI-based polyisocyanate grades. Their suitability should be compared against the customer’s actual formulation requirements rather than assumed from product family alone.
Provide the resin system, intended application, required film properties and processing conditions to Dongsen for grade-selection support.
The current HDX-190 Technical Data Sheet is available through the Download TDS button on this page. For formulation or grade-selection support, contact Dongsen through Get Technical Support.
HDX-190 is an aliphatic HDI trimer polyisocyanate hardener supplied by Dongsen as a raw-material crosslinker for 2K polyurethane coating formulations.
The current application directions are automotive coatings and polyurethane topcoats for outdoor steel components. Final suitability should be validated in the customer’s actual formulation and process.
No. HDX-190 is a polyisocyanate hardener raw material, not a finished anti-corrosion coating. Its use in an outdoor steel polyurethane topcoat does not independently establish the corrosion-protection performance of the complete coating system.
No. Dongsen supplies HDX-190 as an upstream polyisocyanate hardener / crosslinker for formulators. The finished coating is formulated by the customer.
Use the Download TDS button on this page to access the current HDX-190 Technical Data Sheet. For formulation or grade-selection support, use Get Technical Support.
