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

ADEKA HARDENER EH4357S Curing Agent

ADEKA HARDENER EH4357S is a high-performance aliphatic polyamine curing agent from ADEKA’s EH series, engineered for epoxy resins. It delivers excellent flexibility, low viscosity, extended pot life, and superior chemical resistance—ideal for coatings, adhesives, and composites requiring fast ambient-cure with low exotherm and minimal amine blush.
  • adeka hardener eh4357s curing agent_de0ff84a
  • adeka hardener eh4357s curing agent_de0ff84a

Features Of ADEKA HARDENER EH4357S Curing Agent

  1. High reactivity with epoxy resins, enabling rapid gelation and reduced cycle times in industrial curing processes.

  2. Excellent compatibility with standard bisphenol-A and bisphenol-F epoxy systems without phase separation.

  3. Low viscosity at room temperature, facilitating easy handling, metering, and homogeneous mixing.

  4. Good thermal stability and low volatility, supporting safe processing and extended pot life under ambient conditions.

  5. Produces cured networks with high glass transition temperature (Tg) and superior mechanical strength.

Typical Applications Of ADEKA HARDENER EH4357S Curing Agent

  1. Electrical encapsulation and potting compounds for power electronics and transformers.

  2. Structural adhesives for automotive and aerospace composite bonding.

  3. High-performance coatings for corrosion protection in marine and industrial environments.

  4. Wind turbine blade bonding and repair formulations requiring fast-cure capability and toughness.

  5. Prepreg systems and filament-wound composites demanding precise stoichiometric control and low exotherm.

Specifications Of ADEKA HARDENER EH4357S Curing Agent

Chemical TypeAmine-based aliphatic curing agent
Product FormLiquid
AppearancePale yellow to light amber clear liquid
Density (25°C)0.92–0.96 g/cm³
Viscosity (25°C)200–400 mPa·s
Amine Value380–420 mg KOH/g
Primary ApplicationsEpoxy resin curing for structural composites, adhesives, and electrical insulation
Key FeaturesRapid cure, low viscosity, high Tg capability, and excellent chemical resistance


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