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

Evonik VESTANAT B1358A Blocked IPDI Trimer Curing Agent

Evonik VESTANAT B1358A is a blocked IPDI trimer curing agent offering excellent weather resistance thermal stability and low-VOC reactivity for high-performance polyurethane coatings adhesives and elastomers ideal for automotive and industrial applications requiring durable film formation and smooth cure profiles.
  • evonik vestanat b1358a blocked ipdi trimer curing agent_ccc2b933
  • evonik vestanat b1358a blocked ipdi trimer curing agent_ccc2b933

Features Of Evonik VESTANAT B1358A Blocked IPDI Trimer Curing Agent

  1. Highly stable blocked isocyanate based on IPDI trimer, offering excellent shelf life and handling safety at ambient temperatures.

  2. Enables low-bake curing (typically 120–140 °C), supporting energy-efficient coating processes without compromising film performance.

  3. Delivers outstanding weather resistance, gloss retention, and UV stability in demanding outdoor applications.

  4. Provides superior chemical resistance and mechanical durability, including hardness, flexibility, and abrasion resistance.

  5. Compatible with a broad range of hydroxyl-functional resins (e.g., acrylics, polyesters, alkyds) for versatile formulation flexibility.

Typical Applications Of Evonik VESTANAT B1358A Blocked IPDI Trimer Curing Agent

  1. Automotive OEM and refinish clearcoats requiring high gloss, mar resistance, and long-term durability.

  2. Industrial maintenance coatings for metal substrates exposed to harsh environmental or chemical conditions.

  3. Architectural coil coatings where color stability, chalking resistance, and rapid line speed are critical.

  4. Plastic coatings for automotive interior and exterior trim components.

  5. Powder coating hybrid systems seeking enhanced flow, leveling, and edge coverage.

Specifications Of Evonik VESTANAT B1358A Blocked IPDI Trimer Curing Agent

Chemical TypeBlocked aliphatic isocyanate (IPDI trimer, ε-caprolactam-blocked)
Product FormLiquid
AppearancePale yellow to light amber, clear liquid
NCO Content (unblocked basis)Approx. 12.5 wt-%
Viscosity (25 °C)Approx. 1,800–2,500 mPa·s
Density (20 °C)Approx. 1.12–1.15 g/cm³
Solvent ContentNon-solvented (100% active)
Primary ApplicationsTwo-component (2K) and hybrid thermoset coatings for metal and plastic substrates


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