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

Covestro Desmodur 44C Curing Agent

Covestro Desmodur 44C is a high-performance aliphatic polyisocyanate curing agent from the Desmodur® series, designed for two-component polyurethane coatings. It delivers excellent UV stability, gloss retention, and chemical resistance, ideal for premium automotive refinish, industrial maintenance, and high-end architectural applications requiring durable, weather-resistant finishes.
  • covestro desmodur 44c curing agent_26ef13e4
  • covestro desmodur 44c curing agent_26ef13e4

Features Of Covestro Desmodur 44C Curing Agent

  1. High-reactivity aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI) trimer chemistry.

  2. Excellent weather resistance and UV stability — ideal for outdoor applications requiring long-term gloss and color retention.

  3. Low viscosity enables easy handling, efficient mixing with polyols, and compatibility with solvent-based and high-solids coating systems.

  4. Provides outstanding mechanical properties including hardness, flexibility, and chemical resistance in cured films.

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

Typical Applications Of Covestro Desmodur 44C Curing Agent

  1. Automotive OEM and refinish clearcoats and basecoats.

  2. Industrial maintenance coatings for machinery, agricultural equipment, and construction vehicles.

  3. High-performance plastic coatings for automotive interior and exterior trim parts.

  4. Premium wood coatings for furniture, flooring, and architectural millwork.

  5. Aerospace interior coatings requiring low emission and durability.

Specifications Of Covestro Desmodur 44C Curing Agent

Chemical TypeHDI-based aliphatic polyisocyanate (trimer)
Product FormLiquid
AppearanceClear, pale yellow to colorless liquid
NCO Content (wt %)17.5 – 18.5
Viscosity at 25 °C (mPa·s)2,000 – 4,000
Functionality (avg.)~3.3
Storage StabilityStable for ≥12 months at 15–25 °C in sealed containers
Primary ApplicationsTwo-component polyurethane topcoats and clearcoats


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