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

Tosoh CORONATE 1391 Curing Agent

Tosoh CORONATE 1391 Curing Agent is a high-performance aliphatic polyisocyanate crosslinker from Tosoh’s CORONATE series, designed for premium two-component polyurethane coatings requiring excellent weather resistance, gloss retention, and low-temperature curing capability. Widely used in automotive clearcoats and industrial finishes.
  • tosoh coronate 1391 curing agent_c733c408
  • tosoh coronate 1391 curing agent_c733c408

Features Of Tosoh CORONATE 1391 Curing Agent

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

  2. Low viscosity enables easy handling, precise metering, and compatibility with high-solids and solvent-free coating systems.

  3. Provides rapid room-temperature cure kinetics while maintaining extended pot life for industrial processing flexibility.

  4. Delivers superior hardness, chemical resistance, and gloss retention in final cured films.

  5. Compliant with major global VOC regulations and formulated without added solvents or hazardous air pollutants (HAPs).

Typical Applications Of Tosoh CORONATE 1391 Curing Agent

  1. Automotive OEM and refinish clearcoats requiring long-term color stability and scratch resistance.

  2. Industrial maintenance coatings for steel structures, bridges, and offshore platforms.

  3. High-performance plastic coatings for automotive interior trim and exterior emblems.

  4. Premium wood finishes for furniture and architectural millwork demanding clarity and durability.

  5. Two-component polyurethane topcoats used in aerospace interior components and cabinetry.

Specifications Of Tosoh CORONATE 1391 Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate trimer)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt%)15.0 – 16.0%
Viscosity at 25°C (mPa·s)800 – 1,200
Density at 25°C (g/cm³)1.20 – 1.24
Flash Point (Cleveland Open Cup)≈ 145°C
Storage Stability (unopened, 25°C)≥ 12 months


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