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

Tosoh CORONATE LS Curing Agent

Tosoh CORONATE LS Curing Agent is a low-viscosity aliphatic polyisocyanate from Tosoh’s CORONATE series, designed for high-performance 2K polyurethane coatings. It offers excellent weather resistance, fast curing at room temperature, and superior gloss retention—ideal for automotive clearcoats and industrial finishes requiring low VOC and high durability.
  • tosoh coronate ls curing agent_cfd5cdde
  • tosoh coronate ls curing agent_cfd5cdde

Features Of Tosoh CORONATE LS Curing Agent

  1. Low-viscosity aliphatic polyisocyanate offering excellent storage stability and extended pot life.

  2. Non-yellowing performance ideal for high-clarity and color-stable coating systems.

  3. Reacts efficiently at ambient to moderate temperatures, enabling energy-efficient curing.

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

  5. Meets stringent VOC regulations with low volatile organic compound content.

Typical Applications Of Tosoh CORONATE LS Curing Agent

  1. Automotive clearcoats and OEM topcoats requiring non-yellowing durability.

  2. High-performance industrial maintenance coatings for metal and plastic substrates.

  3. Precision optical coatings for lenses, displays, and touch panels.

  4. Wood finishing systems demanding clarity, hardness, and chemical resistance.

  5. UV-LED hybrid coatings where thermal cure support is required alongside photoinitiation.

Specifications Of Tosoh CORONATE LS 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)1.18 – 1.22
Flash Point (°C, closed cup)125 – 135
Primary Applications2K polyurethane coatings for automotive, industrial, and optical markets


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