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EPIKOTE™ Resin 828


EPIKOTE Resin 828 is a medium viscosity liquid epoxy resin produced from bisphenol A resin and epichlorohydrin. It contains no diluent. EPIKOTE 828 provides good pigment wetting and good resistance to filler settling and a high level of mechanical and chemical resistance properties in cured state. However, as an unmodified pure bisphenol A resin, EPIKOTE 828 is prone to crystallise on storage, particularly in cold conditions (see bulletin EK 1.5.11 for a description of the laboratory test method used to determine the crystallisation tendency of EPIKOTE resins). Note, EPIKOTE 827, 828 and 828 LVEL are unmodified resins of similar type and performance; they offer the formulator a choice of viscosity.


  • Medium viscosity
  • Good pigment wetting
  • Good resistance to pigment settling
  • Imparts high mechanical performance
  • Imparts good chemical resistance

Sales Specification

Property Standard Value Unit Test Method
Colour 100 max Pt-Co ASTM D1209
Epoxy Group Content 5260 - 5420 mmol/kg SMS 2026
Viscosity at 25°C 12 - 14 Pa.s* ASTM D445

* 1 Pa.s = 10 Poise 

Typical Properties

Property Standard Value Unit Test Method
Density 1.16 kg/L ASTM D4052
Epoxy Molar Mass 184 - 190 g/equivalent* SMS 2026
Flash Point (PMCC) >150 °C ASTM D93
Viscosity 20°C 32 Pa.s
Viscosity 30°C 6.0 Pa.s
Viscosity 40°C 1.5 Pa.s
Viscosity 50°C 0.55 Pa.s
Viscosity 60°C 0.24 Pa.s
Viscosity 70°C 0.12 Pa.s

*number of grams of resin containing 1 equivalent of epoxide (Weight per equivalent, WPE, is an alternative term).

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