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

Tosoh CORONATE 2785 Curing Agent

Tosoh CORONATE 2785 Curing Agent is a low-viscosity aliphatic polyisocyanate hardener from the CORONATE series, designed for high-performance two-component polyurethane coatings requiring excellent weather resistance, gloss retention, and fast ambient-temperature cure. It offers superior compatibility with hydroxyl-functional resins and low NCO volatility.
  • tosoh coronate 2785 curing agent_5535ff15
  • tosoh coronate 2785 curing agent_5535ff15

Features Of Tosoh CORONATE 2785 Curing Agent

  1. Aliphatic polyisocyanate-based curing agent offering excellent weather resistance and UV stability.

  2. Low-viscosity liquid formulation enabling easy handling, precise metering, and compatibility with standard spray equipment.

  3. Fast-reacting at ambient and elevated temperatures, supporting efficient production cycles without compromising film integrity.

  4. Provides outstanding gloss retention, hardness development, and chemical resistance in final coatings.

  5. Free of hazardous aromatic isocyanates (e.g., TDI, MDI), meeting stringent industrial safety and regulatory requirements.

Typical Applications Of Tosoh CORONATE 2785 Curing Agent

  1. High-performance automotive clearcoats and basecoat/clearcoat systems.

  2. Premium industrial maintenance coatings for metal and plastic substrates.

  3. Architectural coatings requiring long-term color and gloss stability.

  4. Coatings for transportation equipment including railcars and buses.

  5. Plastic coatings for exterior automotive trim and consumer electronics housings.

Specifications Of Tosoh CORONATE 2785 Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate trimer)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt%)15.5–16.5%
Viscosity at 25°C (mPa·s)1,200–1,800
Density at 25°C (g/cm³)1.19–1.23
Solvent ContentAcetate-based (non-halogenated)
Primary ApplicationsTwo-component polyurethane topcoats


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