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

ADEKA Latent Curing Agent EH-4357S

ADEKALatentCuringAgentEH-4357Sisahigh-performanceencapsulateddicyandiamide-basedhardenerspeciallydesignedforepoxyresins.Itoffersexcellentstoragestability,preciseheat-activatedcuring(160–180°C),lowvolatility,andconsistentmechanicalproperties—idealforprepregs,composites,andelectronicencapsulationunderstrictprocesscontrol.
  • adeka latent curing agent eh 4357s_7dc49344
  • adeka latent curing agent eh 4357s_7dc49344

Features Of ADEKA Latent Curing Agent EH-4357S

  1. Highly latent at room temperature—enables extended pot life and excellent storage stability.

  2. Activates rapidly upon thermal triggering (typically >120 °C), ensuring efficient epoxy curing without premature reaction.

  3. Halogen-free formulation, supporting environmentally conscious manufacturing and regulatory compliance (e.g., RoHS, REACH).

  4. Delivers superior thermal and mechanical performance in cured epoxy systems, including high glass transition temperature (Tg) and dimensional stability.

  5. Compatible with standard diglycidyl ether of bisphenol-A (DGEBA) and multifunctional epoxy resins.

Typical Applications Of ADEKA Latent Curing Agent EH-4357S

  1. Prepregs for aerospace and high-performance composites.

  2. Encapsulants and underfills for semiconductor packaging.

  3. Structural adhesives requiring long working time and fast heat-cure cycles.

  4. Electrically insulating coatings and laminating resins for printed circuit boards (PCBs).

  5. 3D printing resins with controlled reactivity and post-cure efficiency.

Specifications Of ADEKA Latent Curing Agent EH-4357S

Chemical TypeDicyandiamide (DICY)-based latent accelerator system
Product FormWhite to off-white free-flowing powder
AppearanceFree-flowing crystalline powder
Primary ApplicationsEpoxy resin systems requiring delayed cure onset and thermal activation
Key FeaturesLatency, halogen-free, high Tg promotion, low volatility
Recommended StorageBelow 25 °C, dry and sealed conditions
Onset Activation TemperatureApprox. 120–125 °C (by DSC)
Shelf Life (unopened)12 months from date of manufacture under recommended storage


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