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

Evonik H12MDI Isocyanate Curing Agent

Evonik Desmodur® H12MDI is a hydrogenated MDI-based aliphatic isocyanate curing agent offering exceptional UV stability, low yellowing, and superior weather resistance for high-performance coatings, adhesives, and elastomers. It delivers excellent mechanical properties, hydrolytic stability, and compatibility with polyols—ideal for demanding outdoor and optical applications.
  • evonik h12mdi isocyanate curing agent_448983dc
  • evonik h12mdi isocyanate curing agent_448983dc

Features Of Evonik H12MDI Isocyanate Curing Agent

  1. Exceptional hydrolytic stability due to fully saturated cyclohexane ring structure.

  2. Low volatility and reduced vapor pressure compared to aromatic isocyanates, enhancing workplace safety.

  3. Excellent compatibility with polyols and polyester/polyether resins for high-performance coatings and adhesives.

  4. Enables production of light-stable, non-yellowing polyurethane systems ideal for demanding aesthetic applications.

  5. Consistent reactivity profile suitable for precise process control in industrial two-component formulations.

Typical Applications Of Evonik H12MDI Isocyanate Curing Agent

  1. High-end automotive clearcoats and OEM refinish coatings.

  2. Architectural and industrial maintenance coatings requiring long-term color retention.

  3. Optical-grade adhesives for laminated glass and display assemblies.

  4. Precision elastomers for medical devices and food-contact compliant components.

  5. UV-resistant polyurethane sealants and joint fillers for façade and infrastructure projects.

Specifications Of Evonik H12MDI Isocyanate Curing Agent

Chemical TypeAliphatic diisocyanate (4,4'-dicyclohexylmethane diisocyanate, hydrogenated MDI)
Product FormLiquid
AppearanceColorless to pale yellow transparent liquid
NCO Content (wt%)Approx. 33.5–34.2%
Viscosity at 25°C (mPa·s)80–120
Specific Gravity (20°C)1.12–1.15
Storage StabilityStable under dry, inert atmosphere at <25°C; protect from moisture
Key FeaturesAliphatic, non-yellowing, low volatility, high hydrolytic resistance


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