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

Tosoh CORONATE 2770 Isocyanate Curing Agent

Tosoh CORONATE 2770 is a low-viscosity aliphatic polyisocyanate curing agent from the CORONATE series, designed for high-performance two-component polyurethane coatings requiring excellent weather resistance, gloss retention, and rapid ambient-cure capability. It offers superior compatibility with hydroxyl-functional resins and enhanced storage stability versus conventional HDI-based hardeners.
  • tosoh coronate 2770 isocyanate curing agent_fd683031
  • tosoh coronate 2770 isocyanate curing agent_fd683031

Features Of Tosoh CORONATE 2770 Isocyanate Curing Agent

  1. Aliphatic hexamethylene diisocyanate (HDI)-based trimer with low volatility and excellent weather resistance.

  2. Non-yellowing formulation ideal for high-gloss, UV-stable topcoats and clear finishes.

  3. Controlled reactivity enables extended pot life and smooth film formation in ambient- or forced-dry conditions.

  4. Low monomer content (<0.5%) meets stringent industrial safety and VOC compliance requirements.

  5. Compatible with a broad range of hydroxyl-functional resins including acrylics, polyesters, and alkyds.

Typical Applications Of Tosoh CORONATE 2770 Isocyanate Curing Agent

  1. Automotive OEM and refinish clearcoats requiring exceptional clarity and long-term gloss retention.

  2. Industrial maintenance coatings for metal substrates exposed to outdoor environments.

  3. High-performance wood coatings used in premium furniture and architectural millwork.

  4. Aerospace interior coatings where non-yellowing performance and low outgassing are critical.

Specifications Of Tosoh CORONATE 2770 Isocyanate Curing Agent

Chemical TypeAliphatic HDI-based isocyanurate trimer
Product FormLiquid
AppearanceColorless to pale yellow transparent liquid
NCO Content (wt%)18.5–19.5%
Viscosity (25°C, mPa·s)1,800–2,400
Density (25°C, g/cm³)1.18–1.22
Flash Point (PMCC, °C)150–160
Storage StabilityStable for ≥12 months at 25°C in sealed containers


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