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

Dow DER A 383 Liquid Epoxy Resin

Dow DER A 383 is a low-viscosity liquid epoxy resin from Dow’s DER™ series, offering excellent adhesion, chemical resistance and electrical insulation. Widely used in composites, coatings and encapsulation, it cures with amines or anhydrides to deliver high-strength, durable thermoset networks ideal for demanding industrial applications.
  • dow der a 383 liquid epoxy resin_573e98ba
  • dow der a 383 liquid epoxy resin_573e98ba

Features Of Dow DER A 383 Liquid Epoxy Resin

  1. Low-viscosity liquid epoxy resin enabling excellent processability and ease of handling in ambient-temperature mixing and dispensing operations.

  2. High purity with low chloride content, supporting superior electrical insulation properties and long-term reliability in electronic encapsulation.

  3. Excellent compatibility with standard amine and anhydride curing agents, facilitating broad formulation flexibility for thermoset systems.

  4. Good adhesion to metals, ceramics, and composite substrates without requiring aggressive surface pretreatment.

  5. Consistent batch-to-batch performance ensured by Dow’s rigorous manufacturing controls and quality assurance protocols.

Typical Applications Of Dow DER A 383 Liquid Epoxy Resin

  1. Encapsulation and potting of electronic components including transformers, sensors, and power modules.

  2. Electrical insulation coatings for motor windings, busbars, and high-voltage connectors.

  3. Structural adhesives for aerospace and automotive composites where thermal stability and bond integrity are critical.

  4. Matrix resin in filament-wound pressure vessels and corrosion-resistant piping systems.

  5. Formulation base for high-performance flooring and protective coatings in industrial environments.

Specifications Of Dow DER A 383 Liquid Epoxy Resin

Chemical TypeBisphenol-A based diglycidyl ether epoxy resin
Product FormClear to pale yellow liquid
AppearanceHomogeneous, low-viscosity liquid at 25°C
Epoxy Equivalent Weight (EEW)185–192 g/eq
Viscosity at 25°C12,000–16,000 cP
Chloride Content≤ 500 ppm
Softening PointNot applicable (liquid at room temperature)
Primary ApplicationsElectronic encapsulation, electrical insulation, structural adhesives, composite matrices


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