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

WANHUA WANNATE HMDI Isocyanate Curing Agent

Wanhua Wannate HMDI is a high-performance aliphatic isocyanate curing agent from Wanhua Chemical’s Wannate series. Featuring excellent weather resistance, low yellowing, and superior UV stability, it’s ideal for premium coatings, adhesives, and elastomers requiring long-term clarity and durability in demanding outdoor applications.
  • wanhua wannate hmdi isocyanate curing agent_a22b392a
  • wanhua wannate hmdi isocyanate curing agent_a22b392a

Features Of WANHUA WANNATE HMDI Isocyanate Curing Agent

  1. High chemical purity with low monomer content for enhanced storage stability and reduced volatility.

  2. Excellent hydrolytic resistance due to sterically hindered hexamethylene diisocyanate (HMDI) structure.

  3. Low color development and superior UV stability, ideal for light-sensitive coating systems.

  4. Controlled reactivity profile enabling precise pot life management in two-component polyurethane formulations.

  5. Compatible with a broad range of polyols including polyester, polyether, and acrylic types.

Typical Applications Of WANHUA WANNATE HMDI Isocyanate Curing Agent

  1. High-performance automotive clearcoats and basecoats requiring gloss retention and weather resistance.

  2. Premium industrial maintenance coatings for metal and concrete substrates.

  3. UV-resistant wood finishes and furniture coatings demanding long-term clarity and hardness.

  4. Electronics encapsulation and protective conformal coatings requiring low outgassing and thermal stability.

  5. Specialty adhesives and sealants where low yellowing and high bond durability are critical.

Specifications Of WANHUA WANNATE HMDI Isocyanate Curing Agent

Chemical TypeHexamethylene Diisocyanate (HMDI)-based aliphatic isocyanate
Product FormLiquid
AppearanceColorless to pale yellow transparent liquid
NCO Content (wt%)19.5–20.5
Viscosity at 25°C (mPa·s)80–120
Density at 25°C (g/cm³)1.07–1.10
Flash Point (°C, closed cup)145–155
Storage Stability (unopened, 25°C)≥12 months


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