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

Evonik VESTANAT TMDI Isocyanate Curing Agent

Evonik VESTANAT TMDI is a low-viscosity, aliphatic polyisocyanate curing agent from the VESTANAT series, offering exceptional UV stability, hydrolytic resistance and fast ambient-cure performance for high-performance coatings, adhesives and elastomers.
  • evonik vestanat tmdi isocyanate curing agent_bc655159
  • evonik vestanat tmdi isocyanate curing agent_bc655159

Features Of Evonik VESTANAT TMDI Isocyanate Curing Agent

  1. Low-viscosity aliphatic isocyanate offering excellent reactivity with polyols and amines.

  2. Outstanding UV stability and color retention—ideal for high-performance exterior coatings.

  3. Low monomer content ensures improved handling safety and reduced volatility versus conventional HDI-based systems.

  4. Enables fast-cure, low-temperature curing profiles without compromising film hardness or chemical resistance.

  5. Compatible with a broad range of resins including acrylics, polyesters, and polyester-polyol hybrids.

Typical Applications Of Evonik VESTANAT TMDI Isocyanate Curing Agent

  1. High-gloss automotive clearcoats requiring exceptional durability and gloss retention.

  2. Industrial maintenance coatings for offshore, wind turbine, and heavy equipment applications.

  3. Architectural façade coatings exposed to intense sunlight and weathering.

  4. Powder coating topcoats where low-cure temperature and yellowing resistance are critical.

  5. High-performance plastic coatings for automotive interior and exterior trim components.

Specifications Of Evonik VESTANAT TMDI Isocyanate Curing Agent

Chemical TypeAliphatic triisocyanate (based on trimethylhexamethylene diisocyanate)
Product FormLiquid
AppearanceColorless to pale yellow transparent liquid
NCO Content (wt %)17.0 – 17.8
Viscosity at 25 °C (mPa·s)80 – 120
Density at 20 °C (g/cm³)1.03 – 1.06
Flash Point (PMCC, °C)145 – 155
Storage Stability (unopened, 25 °C)≥ 12 months


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