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EPI-REZ™ Resin 5108-W-60


EPI-REZ Resin 5108-W-60 is a nonionic, waterborne dispersion of a highly multifunctional Bisphenol A epoxy novolac resin and is most commonly used in combination with other epoxy resin dispersions to increase the epoxide functionality of a system.  Adding EPI-REZ Resin 5108-W-60 to fiber sizing formulations will lead to increased epoxide functionality in the fiber-matrix interphase and can improve moisture, chemical and thermal performance for fiber-reinforced composites.   In cured applications, EPI-REZ Resin 5108-W-60 can be used to increase the rate of green strength or hardness development and will also contribute to improved moisture, chemical and thermal resistance.


  • High functionality epoxy resin
  • Excellent particle size stability
  • No VOC
  • Superior hydrolytic and chemical resistance
  • High thermal resistance
  • Can be cured through epoxide functional groups

Sales Specification

Property Standard Value Unit Test Method
Epoxy Group Content EGC 4000 - 4760 mmol/kg ASTM D1652
Particle Size Coulter Volume Mean 1.7 max. µm Internal
Solids Content 58 - 60 %m ASTM D1259
Viscosity at 25°C, Brookfield 5000 - 13000 cP ASTM D445
Weight per Epoxide WPE 210 - 250 g/eq ASTM D1652

Typical Properties

Property Standard Value Unit Test Method
Appearance Opaque white liquid
Organic Cosolvent None
pH 3 - 6 ASTM E70

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