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

Covestro Desmodur N3800 Curing Agent

Covestro Desmodur N3800 is a high-performance aliphatic polyisocyanate curing agent from the Desmodur N series, designed for two-component polyurethane coatings. It offers excellent weather resistance, low viscosity, and fast curing at ambient temperatures. Widely used in automotive clearcoats, industrial finishes, and high-gloss applications requiring superior gloss retention and UV stability.
  • covestro desmodur n3800 curing agent_c661bb41
  • covestro desmodur n3800 curing agent_c661bb41

Features Of Covestro Desmodur N3800 Curing Agent

  1. Aliphatic polyisocyanate-based curing agent offering excellent UV stability and color retention.

  2. Low viscosity enables easy handling, precise metering, and compatibility with standard spray and mixing equipment.

  3. Provides outstanding chemical resistance, including to solvents, fuels, and cleaning agents.

  4. Enables fast ambient- or forced-dry curing with good pot life for efficient production workflows.

  5. Compliant with major global regulatory frameworks for industrial coatings, including REACH and VOC directives.

Typical Applications Of Covestro Desmodur N3800 Curing Agent

  1. High-performance automotive clearcoats and OEM topcoats.

  2. Industrial maintenance coatings for machinery, rail, and agricultural equipment.

  3. Architectural façade and metal cladding systems requiring long-term gloss and weatherability.

  4. Aerospace interior coatings where low emission and durability are critical.

Specifications Of Covestro Desmodur N3800 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)1,200 – 1,800
Density at 20 °C (g/cm³)1.19 – 1.22
Primary ApplicationsTwo-component polyurethane coatings (2K PU)
Key FeaturesUV-stable, non-yellowing, solvent-borne


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