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

Covestro Desmodur IL1351 Curing Agent

Covestro Desmodur IL1351 is a high-performance aliphatic polyisocyanate curing agent from the Desmodur® IL series, designed for 2K PU coatings requiring excellent UV stability, gloss retention, and chemical resistance—ideal for automotive clearcoats and premium industrial finishes.
  • covestro desmodur il1351 curing agent_e9c400e5
  • covestro desmodur il1351 curing agent_e9c400e5

Features Of Covestro Desmodur IL1351 Curing Agent

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

  2. Low viscosity enables easy handling, precise metering, and improved compatibility with diverse polyol systems.

  3. Provides fast ambient-temperature cure kinetics without requiring elevated oven temperatures.

  4. Delivers outstanding chemical resistance, including to hydrolysis and common solvents.

  5. Compliant with REACH and meets stringent VOC emission requirements for industrial coatings.

Typical Applications Of Covestro Desmodur IL1351 Curing Agent

  1. High-performance clearcoats for automotive OEM and refinish applications.

  2. Durable topcoats for architectural metal and plastic substrates.

  3. UV-resistant protective coatings for wind turbine blades and composite structures.

  4. Industrial maintenance coatings for offshore, marine, and heavy equipment.

  5. Two-component (2K) polyurethane systems for premium wood and flooring finishes.

Specifications Of Covestro Desmodur IL1351 Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate trimer)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt %)15.0 – 16.0
Viscosity at 25 °C (mPa·s)800 – 1,200
Density at 20 °C (g/cm³)1.18 – 1.22
Flash Point (PMCC, °C)145 – 155
Storage StabilityStable for ≥12 months in sealed containers at <25 °C


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