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

Covestro Desmodur L 75 Curing Agent

Covestro Desmodur L 75 is a low-viscosity aliphatic polyisocyanate curing agent from the Desmodur® L series. It delivers excellent UV stability, weather resistance and gloss retention for high-performance two-component polyurethane coatings in automotive refinish, industrial maintenance and plastic finishing applications.
  • covestro desmodur l 75 curing agent_8bb4f14f
  • covestro desmodur l 75 curing agent_8bb4f14f

Features Of Covestro Desmodur L 75 Curing Agent

  1. Low-viscosity aliphatic polyisocyanate blend designed for ambient or low-bake curing.

  2. Excellent UV stability and color retention in demanding outdoor applications.

  3. Good compatibility with hydroxyl-functional acrylics, polyesters, and polyols.

  4. Enables high-gloss, scratch-resistant coatings with balanced pot life and film formation.

  5. Free of solvents and NMP (N-methyl-2-pyrrolidone), supporting sustainable formulation strategies.

Typical Applications Of Covestro Desmodur L 75 Curing Agent

  1. Automotive clearcoats and topcoats for OEM and refinish systems.

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

  3. Architectural and façade coatings requiring long-term gloss and weather resistance.

  4. UV-stable wood coatings for interior and exterior furniture and flooring.

  5. Specialty protective coatings for transportation equipment and agricultural machinery.

Specifications Of Covestro Desmodur L 75 Curing Agent

Chemical TypeAliphatic polyisocyanate (HDI-based trimer)
Product FormLiquid
AppearanceClear, colorless to pale yellow liquid
NCO Content (wt %)11.8 – 12.2%
Viscosity at 25 °C1,000 – 1,400 mPa·s
Density at 20 °C1.16 – 1.18 g/cm³
Flash Point (PMCC)135 – 140 °C
Storage Stability (unopened, 25 °C)≥ 12 months


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