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

Tosoh CORONATE 1333 Curing Agent

Tosoh CORONATE 1333 is a high-performance aliphatic polyisocyanate curing agent from the CORONATE series, designed for premium two-component polyurethane coatings. It offers excellent weather resistance, low viscosity, fast curing at ambient temperatures, and superior gloss retention—ideal for automotive refinish, industrial maintenance, and high-end architectural applications requiring durability and clarity.
  • tosoh coronate 1333 curing agent_1109fe92
  • tosoh coronate 1333 curing agent_1109fe92

Features Of Tosoh CORONATE 1333 Curing Agent

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

  2. Low viscosity for easy handling, improved mixing efficiency, and enhanced formulation flexibility.

  3. Non-yellowing performance ideal for high-gloss and color-critical coating systems.

  4. Good compatibility with hydroxyl-functional acrylics, polyesters, and polyester-acrylic hybrids.

  5. Enables fast ambient- or low-bake cure profiles without compromising film hardness or chemical resistance.

Typical Applications Of Tosoh CORONATE 1333 Curing Agent

  1. Automotive OEM clearcoats and topcoats requiring long-term gloss retention.

  2. High-performance industrial maintenance coatings for architectural metal and façade systems.

  3. Precision plastic coatings for electronics housings and automotive interior trim.

  4. UV-resistant coil coatings for pre-painted metal used in construction and appliances.

  5. Two-component (2K) protective coatings for transportation equipment and agricultural machinery.

Specifications Of Tosoh CORONATE 1333 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)800–1,200
Density at 25°C (g/cm³)1.20–1.24
Solvent ContentNone (solvent-free)
Primary Applications2K polyurethane coatings for automotive, industrial, and architectural use


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