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EPIKOTE™ Resin 828LVEL

Description

EPIKOTE Resin 828LVEL is a medium viscosity liquid epoxy resin produced from bisphenol A resin and epichlorohydrin and contains no diluent. Its viscosity range is intermediate between that of EPIKOTE 827 and EPIKOTE 828EL.  The principal feature of this resin is its low hydrolysable chlorine content. EPIKOTE 828LVEL 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 828LVEL 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, 828EL and 828 LVEL are unmodified resins of similar type and performance; they offer the formulator a choice of viscosity.

Benefits

  • Low hydrolysable chlorine
  • Medium viscosity
  • Suitable for resin advancement
  • Good pigment wetting
  • 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 5340 - 5500 mmol/kg SMS 2026
Hydrolysable chlorine 200 max mg/kg SMS 2739
Total Chlorine 800 - 1800 mg/kg LPM 2873
Viscosity at 25°C 10 - 12 Pa.s* ASTM D445

* 1 Pa.s = 10 Poise 

Typical Properties

Property Standard Value Unit Test Method
Density at 25°C 1.16 kg/L ASTM D4052
Epoxy Molar Mass 182 - 187 g/equivalent SMS 2026
Flash Point (PMCC) >150 °C ASTM D93

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