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On February 1, 2022, Hexion Holdings Corporation announced that it has completed the sale of its Coatings and Composite businesses, which includes the epoxy specialty resins and base epoxy resins and intermediates product lines, to Westlake Chemical Corporation. For epoxy coatings and composite product inquiries, please contact customer service at or

EPON™ Resin CS-377


EPON™ Resin CS-377 is a 100% reactive intermediate viscosity liquid bisphenol-A based  epoxy resin modified with an aromatic glycidyl ether.  This resin is specially designed for applications requiring an intermediate viscosity and low volatility. It exhibits minimal property loss under a broad range of processing or exposure conditions.  This resin should be considered where improved handling is important for the formulated epoxy component.


  • Intermediate viscosity
  • Low color
  • Similar viscosity and reduced crystallization compared to EPON Resin 826
  • Good chemical resistance

Sales Specification

Property Standard Value Unit Test Method
Color 1 max. Gardner ASTM D1544
Viscosity at 25°C 75 - 95 ASTM D445
Weight per Epoxide 182 - 196 g/eq ASTM D1652

Typical Properties

Property Standard Value Unit Test Method
Appearance Clear Liquid
Density 9.6 lb/gal ASTM D1475

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