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

Dow DER 664UE Solid Epoxy Resin

Dow DER 664UE Solid Epoxy Resin is a high-purity, low-bromine bisphenol-A-based solid epoxy resin from Dow’s DER™ series. Designed for demanding electrical encapsulation and powder coatings, it offers excellent thermal stability, low ionic impurities, and consistent melt viscosity. Ideal for high-reliability applications requiring UL recognition and RoHS compliance.
  • dow der 664ue solid epoxy resin_1e731114
  • dow der 664ue solid epoxy resin_1e731114

Features Of Dow DER 664UE Solid Epoxy Resin

  1. High-purity bisphenol-A based solid epoxy resin with consistent molecular weight distribution.

  2. Excellent thermal stability and low volatile organic compound (VOC) content for compliant processing.

  3. Optimized melt viscosity for efficient handling in extrusion, compression molding, and powder coating applications.

  4. Superior adhesion to metals, glass, and composites without requiring surface priming.

  5. Enhanced chemical resistance to alkalis, dilute acids, and solvents after full cure.

Typical Applications Of Dow DER 664UE Solid Epoxy Resin

  1. Electrical encapsulation and potting compounds for transformers, sensors, and power modules.

  2. Powder coatings for corrosion protection of steel infrastructure and automotive components.

  3. Composite matrix resin for filament-wound pressure vessels and structural wind blade adhesives.

  4. Prepreg systems in aerospace-grade laminates requiring high glass transition temperature (Tg).

  5. High-performance adhesives for electronics assembly and semiconductor packaging substrates.

Specifications Of Dow DER 664UE Solid Epoxy Resin

Chemical TypeBisphenol-A epoxy resin
Product FormOff-white to light tan solid flakes
AppearanceFree-flowing crystalline flakes
Epoxy Equivalent Weight (EEW)470–490 g/eq
Melting Point105–115 °C
Softening Point85–95 °C (ASTM E28)
Volatiles Content<0.3 wt% (105 °C, 2 h)
Key FeaturesLow chloride content, high purity, excellent storage stability


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