Desmodur N3600 |
WANNATE HT-600 | DURANATE TPA-100 Equivalent

Low-viscosity HDI trimer isocyanate hardener for high-solids 2K polyurethane coatings, polyaspartic coatings, industrial coatings, automotive refinish coatings, and protective coating systems.

Why Choose Feiyang Protech

Technical Support

Formulation and application support.

80+

Invention patents.

200+

Customers in
30+ countries.

Scale & Experience

Three plants, 60,000㎡, 30+ years of industry experience.

Characterization & Properties

Item Typical Value
Chemical type HDI based cross-linker, low-viscosity oligomeric
NCO content 23.0 ± 0.5 %
Viscosity (25 °C) Approx. 1,100 mPa·s
Color value (Hazen) ≤ 40
HDI monomer content < 0.25 %
Density (20 °C) Approx. 1.16 g/cm³

Application Areas

  • 2K polyurethane coating systems
  • Polyaspartic coating systems
  • Industrial and protective coatings
  • Automotive refinish coatings
  • Plastic coatings
  • High-solids coating systems
  • Aqueous 2K polyurethane coatings

Need help choosing an equivalent?

Send us your base system, application and requirements. Our technical team will recommend a suitable grade for evaluation.

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Solubility & Compatibility

Category Typical Solvent or System
Solubility / thinnability Can be thinned with esters, ketones and aromatic hydrocarbons such as ethyl acetate, butyl acetate, PMA, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, toluene, xylene, solvent naphtha 100 and mixtures thereof.
Compatibility Generally good compatibility with the listed solvents and common coating resins. The compatibility and storage stability of the combinations used should be tested.
Moisture sensitivity Moisture sensitive. Use PU-grade solvents only and keep containers tightly sealed. Protect from moisture, heat and foreign material.

Storage

Recommended storage temperature: 10 – 30 °C.
Protect from moisture, heat and foreign material.
Storage at elevated temperatures may cause viscosity increase and NCO content decrease.

Technical Support

  • Sample for evaluation
  • Formulation support

Moisture Sensitive

Keep containers tightly closed.
Recommended storage temperature: 10 – 30 °C.
Use PU-grade solvents and test compatibility before formulation application.

Get In Touch
With The Feiyang Protech Team

Feiyang Protech has an in-house R&D lab since 2004 with 40 engineers, providing custom formulas and technical support. The company operates three plants with 60,000 square meters of production area, serving over 200 firms in more than 30 countries. It offers factory-direct supply with economies of scale, a 26,000-ton capacity, and over 30 years of industry experience. Feiyang Protech also holds 84 invention patents, 17 industry standards, and ECOVADIS Silver certification.

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