Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Tosoh CORONATE HXR Isocyanate Curing Agent

Tosoh CORONATE HXR is a high-reactivity aliphatic polyisocyanate curing agent from Tosoh’s CORONATE series, designed for premium UV- and weather-resistant coatings. It offers excellent gloss retention, low VOC, fast cure at ambient or elevated temperatures, and superior compatibility with acrylic and polyester polyols—ideal for automotive clearcoats, industrial finishes, and high-durability topcoats.
  • tosoh coronate hxr isocyanate curing agent_4f9daccd
  • tosoh coronate hxr isocyanate curing agent_4f9daccd

Features Of Tosoh CORONATE HXR Isocyanate Curing Agent

  1. High-reactivity aliphatic isocyanate based on hexamethylene diisocyanate (HDI) trimer chemistry.

  2. Excellent weather resistance and UV stability, preventing yellowing in outdoor applications.

  3. Low viscosity enables easy handling, precise metering, and homogeneous mixing with hydroxyl-functional resins.

  4. Non-yellowing performance suitable for clearcoats and light-colored coating systems.

  5. Compliant with major global VOC regulations and formulated for low-monomer content (<0.1% free HDI).

Typical Applications Of Tosoh CORONATE HXR Isocyanate Curing Agent

  1. Automotive OEM clearcoats and basecoat/clearcoat systems.

  2. High-performance industrial maintenance coatings for machinery and infrastructure.

  3. Premium architectural coatings requiring long-term gloss retention and color stability.

  4. Plastic coatings for automotive interior trim and consumer electronics housings.

  5. UV-resistant wood finishes for premium furniture and flooring applications.

Specifications Of Tosoh CORONATE HXR Isocyanate Curing Agent

Chemical TypeAliphatic HDI-based polyisocyanate (trimer)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt%)21.5–22.5%
Viscosity (mPa·s at 25°C)800–1,200
Free HDI Monomer (wt%)<0.1%
Density (g/cm³ at 25°C)1.18–1.22
Flash Point (°C, closed cup)145–155


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