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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 8161


EPON™ Resin 8161 is a moderate viscosity resin containing both epoxide and reactive unsaturation functionality. Reactivity of this resin with aliphatic and cycloaliphatic amine curing agents closely parallels that of unmodified liquid bisphenol A/ephichlorohydrin epoxy resins. This unique feature allows the substitution of EPON 8161 for the basic epoxy in many systems without adversely affecting cure rates.


  • Excellent substrate wetting
  • Light color
  • Low vapor pressure
  • High reactivity and good cured property profile with specific amine types

Sales Specification

Property Standard Value Unit Test Method
Color 1 max. Gardner ASTM D1544
Viscosity at 25°C 1800 - 2400 cP ASTM D2196
Weight per Epoxide 200 - 214 g/eq ASTM D1652

Typical Properties

Property Standard Value Unit Test Method
Combining Equivalent Weight 177 g/eq
Density at 25°C 9.56 lb/gal ASTM D1475

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