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

Evonik VESTANAT H12MDI Curing Agent

Evonik VESTANAT® H12MDI is a hydrogenated MDI-based aliphatic curing agent offering superior UV stability, low yellowness, and excellent chemical resistance for high-performance polyurethane coatings and adhesives. Designed for demanding industrial applications, it enables durable, clear, and weather-resistant finishes without aromatic discoloration risks.
  • evonik vestanat h12mdi curing agent_1f89c6b5
  • evonik vestanat h12mdi curing agent_1f89c6b5

Features Of Evonik VESTANAT H12MDI Curing Agent

  1. Highly aliphatic, hydrogenated MDI-based curing agent offering excellent UV stability and color retention.

  2. Low volatility and reduced monomer content compared to standard aromatic isocyanates, enhancing workplace safety.

  3. Enables formulation of high-performance polyurethane coatings with superior hardness, chemical resistance, and flexibility.

  4. Compatible with a broad range of polyols—including polyester, acrylic, and polycarbonate types—for versatile system design.

  5. Provides extended pot life at ambient temperatures while enabling rapid cure at elevated temperatures (e.g., 80–120 °C).

Typical Applications Of Evonik VESTANAT H12MDI Curing Agent

  1. High-end automotive clearcoats and OEM topcoats requiring exceptional gloss, DOI, and weatherability.

  2. Industrial maintenance coatings for infrastructure, machinery, and rail applications exposed to harsh environments.

  3. Premium wood finishes in furniture and flooring where non-yellowing performance and scratch resistance are critical.

  4. Aerospace interior coatings demanding low VOC, flame retardancy support, and long-term aesthetic stability.

Specifications Of Evonik VESTANAT H12MDI Curing Agent

Chemical TypeHydrogenated MDI (4,4′-dicyclohexylmethane diisocyanate) trimer
Product FormLiquid
AppearanceColorless to pale yellow, clear liquid
NCO Content (wt %)15.5 – 16.5
Viscosity at 25 °C (mPa·s)1,200 – 2,500
Functionality (avg.)~3.0
Storage Stability≥12 months at ≤25 °C in sealed containers
Primary ApplicationsTwo-component polyurethane coatings (automotive, industrial, wood)


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