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

Tosoh CORONATE HXR90B Curing Agent

Tosoh CORONATE HXR90B is a high-reactivity aliphatic polyisocyanate curing agent from the CORONATE series, designed for premium UV- and thermally-cured coatings. It offers excellent weather resistance, low viscosity, and fast cure speed—ideal for automotive clearcoats and high-performance industrial finishes requiring superior gloss and durability.
  • tosoh coronate hxr90b curing agent_ec2715ab
  • tosoh coronate hxr90b curing agent_ec2715ab

Features Of Tosoh CORONATE HXR90B Curing Agent

  1. High-reactivity aliphatic polyisocyanate with excellent weatherability and UV resistance.

  2. Low-viscosity liquid formulation enabling easy handling, precise metering, and seamless integration into 2K polyurethane systems.

  3. Non-yellowing performance ideal for clearcoats and topcoats requiring long-term gloss and color retention.

  4. Compatible with a broad range of polyols—including polyester, acrylic, and polycarbonate diols—supporting versatile formulation design.

  5. Meets stringent VOC regulations with negligible monomeric HDI content, supporting sustainable coating development.

Typical Applications Of Tosoh CORONATE HXR90B Curing Agent

  1. Automotive OEM and refinish clearcoats and basecoat/clearcoat systems.

  2. High-performance industrial maintenance coatings for infrastructure and heavy equipment.

  3. Premium architectural coatings for façades, windows, and metal cladding requiring durability and aesthetics.

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

  5. Wood finishes demanding clarity, hardness, and resistance to abrasion and solvents.

Specifications Of Tosoh CORONATE HXR90B Curing Agent

Chemical TypeAliphatic polyisocyanate (HDI-based biuret)
Product FormClear, low-viscosity liquid
AppearanceColorless to pale yellow, transparent liquid
NCO Content (wt%)Approx. 18.5–19.5%
Viscosity at 25°C (mPa·s)Approx. 2,500–3,500
Density at 25°C (g/cm³)Approx. 1.17–1.19
Monomeric HDI Content<0.2 wt%
Storage StabilityStable for ≥12 months at 5–30°C in sealed containers


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