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

Tosoh CORONATE 1342 Curing Agent

Tosoh CORONATE 1342 Curing Agent is a low-viscosity aliphatic polyisocyanate from Tosoh’s CORONATE series, designed for high-performance two-component polyurethane coatings. It offers excellent weather resistance, gloss retention, and fast curing at ambient temperatures—ideal for automotive refinishes, industrial finishes, and clearcoats requiring superior durability and clarity.
  • tosoh coronate 1342 curing agent_9510c91c
  • tosoh coronate 1342 curing agent_9510c91c

Features Of Tosoh CORONATE 1342 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 homogeneous mixing with hydroxyl-functional resins.

  3. Fast-reacting at ambient to moderate elevated temperatures, supporting efficient production cycles in industrial coating lines.

  4. Provides superior gloss retention, color stability, and mechanical durability in final cured films.

  5. Compliant with major global VOC regulations for high-performance industrial and automotive topcoats.

Typical Applications Of Tosoh CORONATE 1342 Curing Agent

  1. Automotive OEM clearcoats and basecoat/clearcoat systems.

  2. High-end industrial maintenance coatings for rail, construction equipment, and agricultural machinery.

  3. Precision plastic coatings requiring scratch resistance and optical clarity.

  4. Architectural metal cladding and facade coatings demanding long-term chalking resistance.

  5. UV-resistant wood finishes for exterior applications such as decking and façade panels.

Specifications Of Tosoh CORONATE 1342 Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate trimer)
Product FormLiquid
AppearanceColorless to pale yellow transparent liquid
NCO Content (wt%)15.5 – 16.5%
Viscosity at 25°C (mPa·s)800 – 1,200
Density at 25°C (g/cm³)1.18 – 1.22
Flash Point (Tag Closed Cup)≈ 125°C
Primary Applications2K polyurethane topcoats for automotive, industrial, and architectural use


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