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

Covestro Desmodur N 3790 BA Curing Agent

Covestro Desmodur® N 3790 BA is a high-performance aliphatic polyisocyanate curing agent from the Desmodur® N series, designed for UV- and thermally cured coatings. It delivers excellent weather resistance, gloss retention, and low viscosity for easy formulation in automotive clearcoats and industrial finishes.
  • covestro desmodur n 3790 ba curing agent_f64a62e6
  • covestro desmodur n 3790 ba curing agent_f64a62e6

Features Of Covestro Desmodur N 3790 BA Curing Agent

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

  2. Low-viscosity liquid formulation enabling easy handling, precise metering, and efficient mixing with hydroxyl-functional resins.

  3. Provides outstanding chemical resistance, including resistance to solvents, acids, and alkalis in cured coatings.

  4. Complies with REACH and meets stringent VOC regulations for industrial coating applications.

  5. Enables fast ambient or low-bake cure profiles without compromising film hardness or gloss development.

Typical Applications Of Covestro Desmodur N 3790 BA Curing Agent

  1. High-performance automotive refinish clearcoats and basecoats.

  2. Industrial maintenance coatings for metal substrates in transportation and infrastructure sectors.

  3. Powder coating hybrid systems requiring improved flexibility and impact resistance.

  4. Architectural and façade coatings demanding long-term weatherability and gloss retention.

  5. Plastic coatings for exterior automotive components and consumer electronics housings.

Specifications Of Covestro Desmodur N 3790 BA Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate–based)
Product FormClear, low-viscosity liquid
AppearanceColorless to pale yellow, transparent liquid
NCO Content (wt%)15.5 – 16.5
Viscosity at 25°C (mPa·s)800 – 1,200
Density at 20°C (g/cm³)1.17 – 1.21
Solvent ContentAcetate-based (non-halogenated)
Primary ApplicationsTwo-component polyurethane coatings for high-durability finishes


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