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

Covestro TDI Trimer Curing Agent Desmodur IL 1451

Covestro Desmodur® IL 1451 is a TDI-based trimer polyisocyanate curing agent from the Desmodur® IL series, offering low viscosity, excellent storage stability and fast curing for high-performance coatings, adhesives and elastomers requiring chemical resistance and flexibility.
  • covestro tdi trimer curing agent desmodur il 1451_f8003503
  • covestro tdi trimer curing agent desmodur il 1451_f8003503

Features Of Covestro TDI Trimer Curing Agent Desmodur IL 1451

  1. Low-viscosity, solvent-free aliphatic trimer-based polyisocyanate offering excellent storage stability.

  2. Provides fast room-temperature cure kinetics with balanced pot life for efficient coating and adhesive processing.

  3. Delivers outstanding chemical resistance, particularly to solvents, acids, and alkalis, in cured polyurethane systems.

  4. Enables high crosslink density without excessive brittleness, supporting excellent mechanical durability and flexibility.

  5. Complies with REACH and meets stringent VOC regulations due to its non-volatile, low-monomer-content formulation.

Typical Applications Of Covestro TDI Trimer Curing Agent Desmodur IL 1451

  1. High-performance industrial maintenance coatings for steel and concrete infrastructure.

  2. Two-component polyurethane floor coatings requiring rapid return-to-service and abrasion resistance.

  3. Automotive refinish clearcoats and basecoat/clearcoat systems demanding gloss retention and UV stability.

  4. Specialty adhesives and sealants for transportation and construction where thermal and chemical resilience is critical.

  5. Protective linings for tanks and piping in chemical handling environments.

Specifications Of Covestro TDI Trimer Curing Agent Desmodur IL 1451

Chemical TypeTDI-based aliphatic trimer (isocyanurate)
Product FormLiquid
AppearanceClear, pale yellow liquid
NCO Content (wt %)19.5–20.5%
Viscosity at 25°C (mPa·s)800–1,200
Specific Gravity (20°C)1.20–1.24
Storage Stability (unopened, 25°C)≥12 months
Key FeaturesSolvent-free, low monomer TDI (<0.1%), non-yellowing


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