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jER™ YX7400N

Sold by The Mitsubishi Chemical Group
Polymer Name: Epoxy Resins & Compounds
Function: Adhesion Promoter, Binder, Coupling Agent, Impact Modifier
Chemical Family: Epoxy & Epoxy Derivatives
End Uses: Semiconductor Applications, Conformal Coating
Features: Improved Flexibility, High Impact Resistance, Good Mechanical Properties, Excellent Elasticity, Abrasion Resistance, Good Elasticity, Excellent Resilience, Impact Resistance, Reduced Wear, Improved Dimensional Stability
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TypeDocument Name
Technical Data Sheet
jER™ YX7400N Technical Data Sheet
jER™ YX7400N Technical Data Sheet
Technical Data Sheet
Safety Data Sheet
jER™ YX7400N Safety Data Sheet
jER™ YX7400N Safety Data Sheet
Safety Data Sheet
jER™ Epoxy Resin Series Brochure
jER™ Epoxy Resin Series Brochure

Knowde Enhanced TDS

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Identification & Functionality

jER™ YX7400N Features & Benefits

  • Highly adhesive to metal, porcelain, concrete
  • Excellent insulation property
  • High heat resistance
  • High chemical resistance
  • High water resistance

Applications & Uses


Physical Form
Colorless to yellow liquid
Physical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)1g/cm3Oscillation-Type Density
Typical Properties
ValueUnitsTest Method / Conditions
Epoxy Equivalent Weight (WPE)400 - 500g/eqPotentiometric Titration
Viscosity (at 25°C)100 - 250mPa.sBrookfield viscometer
Properties Formulation

  Value Unit Method
jER™ YX7400N 100 phr  
Bisphenol A Novolac Equivalent to epoxy group of YX7400N phr  
Triphenylphosphine 1 phr  
curing condition

80°C x 3h + 140°C x 3h


Cured State Properties

Tg -57 °C

Thermomechanical Analysis

Td5 283 °C

Thermogravimetry-Differential, Thermal Analysis (Heating rate: 10°C/min, in air)

Tensile Modulus 0.9 MPa Autograph
Tensile Strength 0.2 MPa Autograph
Tensile Elongation 20 MPa Autograph
Resilience at 23°C 84 %

Lupke Pendulum Type Resilience Test (JIS-K-6255)

Technical Details & Test Data

Typical Reactions with Representative Hardeners

Typical Reactions with Self Polymerization

Flexible, Rubbery Epoxy Resins

Selection of Hardeners

Appropriate choice of Hardener for a desired curing temperature

General Ways to Use Epoxy
  • Epoxy resin forms 3D crosslinked network structure
  • Abundant choices of Epoxy/Hardener combination


Packaging & Availability

Packaging Type
Packaging Information
Metal can with 18 kg net

Storage & Handling

Shelf Life
3 months
Storage and Handling

Carefully read the SDS before using, handling, transporting, storing or disposing. jER™ YX7400N should be stored in tightly closed containers under exclusion of humidity at gentle temperatures. Avoid exposure to direct sunlight. Under these storage conditions the product has a minimum shelf life of three months from date of delivery.

jER™ YX7400N
The Mitsubishi Chemical Group