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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 58005


EPON™ Resin 58005 is an elastomer modified epoxy functional adduct formed from the reaction of the diglycidyl ether of bisphenol A and a carboxyl terminated butadiene-acrylonitrile elastomer. Elastomer content is approximately 40% by weight. Primary use of EPON 58005 is the modification of conventional epoxy systems to increase flexibility, adhesion properties and fatigue resistance.


  • High elastomer content – convenient adjustment of elastomer content
  • Compatible with a wide range of liquid epoxy resins
  • Imparts improved peel strength and fatigue resistance with minimal reduction of stiffness and maximum operating temperature

Sales Specification

Property Standard Value Unit Test Method
Appearance Clear to Slight Hazy Liquid
Color 11 max. Gardner ASTM D1544
Epoxide Equivalent Weight 325 - 375 g/eq ASTM D1652
Viscosity at 25°C 3000 - 8000 P ASTM D2196

Typical Properties

Property Standard Value Unit Test Method
Density at 25°C 9.0 lb/gal ASTM D1475

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