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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

EPI-REZ™ Resin 3514-W-56


EPI-REZ™ Resin 3514-W-56 is a nonionic, waterborne dispersion of a liquid epoxy resin and was developed primarily for glass fiber sizing.  For this application, EPI-REZ 3514-W-56 provides good particle size stability and fiber lubricity while maintaining a balance of fiber wet out and composite mechanical properties.


  • Physically stable, nonionically dispersed, low molecular weight epoxy resin
  • Excellent particle size stability
  • Low viscosity film former
  • Helps to impart lubricity and wetting characteristics for fiber sizing
  • Can be cured through epoxide functional groups

Sales Specification

Property Standard Value Unit Test Method
Epoxide Equivalent Weight 205 - 225 g/eq ASTM D1652
Particle Size, Coulter Volume Mean Coulter Volume Mean 1.2 max. µm Internal
pH 6 - 10 ASTM E70
Solids Content 55 - 57 %m ASTM D1259
Viscosity at 25°C, Brookfield 300 - 3000 cP ASTM D1545

Typical Properties

Property Standard Value Unit Test Method
Appearance Opaque white liquid Visual
Density @ 25°C 9.0 lbs/gal ASTM D1475
Organic Cosolvent None
Solvent Water

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