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

Covestro Desmodur VL Curing Agent

Covestro Desmodur VL Curing Agent is a low-VOC, aliphatic polyisocyanate hardener from the Desmodur® VL series. Designed for high-performance UV- and dual-cure coatings, it delivers excellent weather resistance, gloss retention, and fast curing without yellowing. Ideal for automotive clearcoats, industrial finishes, and plastic coatings requiring superior durability and clarity.
  • covestro desmodur vl curing agent_bc52967b
  • covestro desmodur vl curing agent_bc52967b

Features Of Covestro Desmodur VL 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. Fast-reacting at ambient and elevated temperatures, supporting high-throughput industrial coating processes.

  4. Complies with stringent VOC regulations and offers reduced hazard classification compared to aromatic isocyanates.

  5. Delivers superior mechanical properties—including hardness, flexibility, and chemical resistance—in cured film systems.

Typical Applications Of Covestro Desmodur VL Curing Agent

  1. High-performance automotive clearcoats and basecoats requiring long-term gloss and weatherability.

  2. Industrial maintenance coatings for metal substrates in architectural and infrastructure applications.

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

  4. Wood coatings demanding low-yellowing performance and excellent scratch resistance.

  5. UV-resistant coil coatings for pre-finished metal sheets used in building façades and appliances.

Specifications Of Covestro Desmodur VL 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)800 – 1,200
Specific Gravity (20°C)1.18 – 1.22
Solvent ContentNone (100% solids)
Primary ApplicationsTwo-component polyurethane coatings for automotive, industrial, and plastic substrates


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