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

Mitsui EPOKEY 813 Epoxy Resin

Mitsui EPOKEY 813 is a high-purity bisphenol-A epoxy resin from Mitsui Chemicals’ EPOKEY series, offering excellent adhesion, chemical resistance and thermal stability for advanced composites, electronics encapsulation and industrial coatings.
  • mitsui epokey 813 epoxy resin_af8739eb
  • mitsui epokey 813 epoxy resin_af8739eb

Features Of Mitsui EPOKEY 813 Epoxy Resin

  1. High-purity bisphenol-A type liquid epoxy resin with low chlorine content.

  2. Excellent compatibility with standard amine and anhydride curing agents.

  3. Low viscosity (10,000–14,000 mPa·s at 25°C) enabling easy processing and impregnation.

  4. Superior electrical insulation properties and thermal stability up to 130°C continuous use.

  5. Consistent batch-to-batch quality meeting stringent JIS K 7203 and ASTM D1654 specifications.

Typical Applications Of Mitsui EPOKEY 813 Epoxy Resin

  1. Electrical encapsulation and potting compounds for transformers and reactors.

  2. High-voltage insulators and bushings requiring long-term dielectric reliability.

  3. Prepregs and laminates in printed circuit board (PCB) base materials.

  4. Composite matrix resin for aerospace and wind turbine blade components.

  5. Structural adhesives demanding high shear strength and moisture resistance.

Specifications Of Mitsui EPOKEY 813 Epoxy Resin

Chemical TypeBisphenol-A based liquid epoxy resin
Product FormClear, pale yellow liquid
AppearanceTransparent, slightly viscous liquid
Epoxy Equivalent Weight (EEW)185–195 g/eq
Viscosity (25°C)10,000–14,000 mPa·s
Chloride Content≤ 700 ppm
Softening PointNot applicable (liquid at room temperature)
Storage Stability12 months at 25°C in sealed original packaging


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