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

Dow DEN 431 Epoxy Resin

Dow DEN 431 Epoxy Resin is a high-purity, liquid bisphenol-A epoxy resin from Dow’s DEN series, offering excellent adhesion, chemical resistance, and thermal stability. Widely used in composites, coatings, and electrical encapsulation, it delivers consistent reactivity and low viscosity for easy processing and superior performance in demanding industrial applications.
  • dow den 431 epoxy resin_ed109f72
  • dow den 431 epoxy resin_ed109f72

Features Of Dow DEN 431 Epoxy Resin

  1. High-purity, low-chloride liquid epoxy resin with excellent hydrolytic stability.

  2. Consistent reactivity and low viscosity for enhanced processability in formulation.

  3. Superior electrical insulation properties suitable for high-reliability electronic encapsulation.

  4. Excellent adhesion to metals, ceramics, and composite substrates.

  5. Compatible with standard amine and anhydride curing agents for broad formulation flexibility.

Typical Applications Of Dow DEN 431 Epoxy Resin

  1. Encapsulation and potting of power electronics and IGBT modules.

  2. Electrical insulating varnishes and impregnation resins for motors and transformers.

  3. Structural adhesives requiring thermal and chemical resistance.

  4. High-performance composites in aerospace and industrial tooling.

  5. UV-curable hybrid systems where low ionic impurity is critical.

Specifications Of Dow DEN 431 Epoxy Resin

Chemical TypeDiglycidyl ether of bisphenol-A (DGEBA)
Product FormLiquid
AppearanceClear, pale yellow, transparent liquid
Epoxy Equivalent Weight (EEW)185–192 g/eq
Viscosity at 25°C12,000–16,000 cP
Chloride Content≤ 500 ppm
Volatiles Content≤ 0.3 wt%
Color (APHA)≤ 30


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