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

NPC NPES-304 Solid Epoxy Resin

NPCNPES-304SolidEpoxyResinisahigh-performancebisphenol-A-basedsolidepoxyresinfromNPC’sNPESseries,offeringexcellentmechanicalstrength,chemicalresistance,andelectricalinsulation;widelyusedincomposites,adhesives,coatings,andpowdercoatingsforindustrialapplications.
  • npc npes 304 solid epoxy resin_4a9d5dd1
  • npc npes 304 solid epoxy resin_4a9d5dd1

Features Of NPC NPES-304 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 environmentally compliant processing.

  3. Superior adhesion to metals, glass fibers, and thermoset composites without requiring additional coupling agents.

  4. Optimized melt viscosity for efficient handling in extrusion, powder coating, and filament winding applications.

  5. Controlled epoxy equivalent weight (EEW) enabling precise stoichiometric formulation with common hardeners.

Typical Applications Of NPC NPES-304 Solid Epoxy Resin

  1. Electrical encapsulation and potting compounds for transformers, sensors, and PCB protection.

  2. Powder coatings for automotive under-hood components and industrial metal substrates.

  3. Prepreg systems in aerospace and wind turbine blade composite manufacturing.

  4. Structural adhesives for high-performance bonding in transportation and construction sectors.

  5. Electrophoretic deposition (EPD) coatings for corrosion-resistant metal finishing.

Specifications Of NPC NPES-304 Solid Epoxy Resin

Chemical TypeBisphenol-A diglycidyl ether (DGEBA) epoxy resin
Product FormOff-white to pale yellow solid flakes or pellets
AppearanceFree-flowing granular solid, homogeneous particle size
Epoxy Equivalent Weight (EEW)470–490 g/eq (ASTM D1652)
Melting Point85–92 °C (DSC method)
Gardner Color≤ 2 (10% w/w solution in methyl isobutyl ketone)
Softening Point88–94 °C (ring-and-ball, ASTM E28)
Volatiles Content≤ 0.3 wt% (105 °C, 2 h, ASTM D2571)


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