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

Tosoh CORONATE HXR90 Curing Agent

Tosoh CORONATE HXR90 Curing Agent is a high-reactivity aliphatic polyisocyanate from Tosoh’s CORONATE series, designed for premium two-component polyurethane coatings. It offers excellent weather resistance, low viscosity, and fast curing at ambient temperatures—ideal for automotive refinishes and industrial topcoats requiring superior gloss and durability.
  • tosoh coronate hxr90 curing agent_a87e9124
  • tosoh coronate hxr90 curing agent_a87e9124

Features Of Tosoh CORONATE HXR90 Curing Agent

  1. High-reactivity aliphatic isocyanate trimer with low monomer content for enhanced safety and handling.

  2. Excellent weatherability and UV stability due to aliphatic backbone—ideal for outdoor and premium coating systems.

  3. Low viscosity (approx. 800–1,200 mPa·s at 25°C) enables easy formulation and improved compatibility with common polyols.

  4. Non-yellowing performance ensures long-term clarity and color retention in transparent and light-colored coatings.

  5. Complies with major global regulatory frameworks including REACH and TSCA; free of dibutyltin dilaurate (DBTDL) and other restricted catalysts.

Typical Applications Of Tosoh CORONATE HXR90 Curing Agent

  1. High-performance automotive clearcoats and OEM topcoats requiring gloss retention and chip resistance.

  2. Industrial maintenance coatings for infrastructure, machinery, and offshore equipment exposed to harsh environments.

  3. Premium architectural coatings including façade sealants, elastomeric roof coatings, and UV-stable façade paints.

  4. High-solid and low-VOC two-component polyurethane systems targeting sustainability and regulatory compliance.

  5. Specialty adhesives and sealants demanding non-yellowing behavior and long-term flexibility.

Specifications Of Tosoh CORONATE HXR90 Curing Agent

Chemical TypeAliphatic isocyanurate trimer (hexamethylene diisocyanate-based)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt%)17.0–17.6%
Viscosity (mPa·s, 25°C)800–1,200
Specific Gravity (25°C)1.18–1.22
Storage StabilityStable for ≥12 months at 15–25°C in sealed containers
Primary Applications2K PU coatings, clearcoats, industrial finishes, high-durability adhesives


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