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

Tosoh NPU NM50 Curing Agent

Tosoh NPU NM50 Curing Agent is a high-performance aliphatic polyisocyanate crosslinker from Tosoh’s NPU series, designed for premium UV- and thermally cured coatings. It offers excellent gloss retention, weather resistance, and low VOC content. Ideal for automotive clearcoats, industrial finishes, and high-durability topcoats requiring rapid cure and superior chemical resistance.
  • tosoh npu nm50 curing agent_35b3dde1
  • tosoh npu nm50 curing agent_35b3dde1

Features Of Tosoh NPU NM50 Curing Agent

  1. High reactivity with polyols, enabling rapid room-temperature or low-bake curing.

  2. Excellent compatibility with aromatic and aliphatic polyurethane systems.

  3. Low volatility and minimal odor — supports safer handling and improved workplace air quality.

  4. Enhanced final film hardness and chemical resistance without compromising flexibility.

  5. Stable storage life under recommended conditions (unopened, dry, <30°C).

Typical Applications Of Tosoh NPU NM50 Curing Agent

  1. Automotive clearcoats and basecoat/clearcoat systems.

  2. Industrial maintenance coatings for metal and concrete substrates.

  3. High-performance wood finishes requiring durability and gloss retention.

  4. Railway and bus exterior protective coatings.

  5. Plastic coatings for automotive interior trim and electronics housings.

Specifications Of Tosoh NPU NM50 Curing Agent

Chemical TypeAliphatic polyisocyanate blend (HDI-based)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt%)18.5–19.5%
Viscosity at 25°C (mPa·s)1,200–1,600
Density at 25°C (g/cm³)1.17–1.21
Flash Point (°C, closed cup)125–135
Storage Stability (unopened, <30°C)≥12 months


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