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jER™ 4250

Sold by Mitsubishi Chemical

jER™ 4250 is a hybrid bisphenol A/bisphenol F-type epoxy resin that is more flexible than conventional polymer-type epoxy resins. It can be used as an additive to add toughness, insulating and vapor barrier properties and resistance to heat, water and chemicals to a variety of applications.

Features

  • Polymer-type epoxy resin with epoxy functional groups at the both ends
  • High molecular weight
  • High softening points 
  • Good adhesion

Applications

  • PCM, CAN and other coatings
  • Paint
  • Thermoplastics 
  • Printed electronics 
  • Plastic processing 
Chemical Family: Epoxy & Epoxy Derivatives
Polymer Name: Epoxy Resins & Compounds
Compatible Substrates & Surfaces: Glass, Fibers & Fabrics, Metal, Steel, Plastics, Aluminum, Ceramic, Concrete & Masonry
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Identification & Functionality

jER™ 4250 Features & Benefits

Product Highlights
  • Solid type(pellet)
  • Polymer epoxy resin
  • Tough
  • Addition of polymer epoxy resin gives toughness and film/sheet formability

Applications & Uses

Usage & Application
  • Coating (PCM, CAN, and so on)
  • Paint
  • Additives to improve paintability/coatability
  • Additives to give toughness/flexibility for fiber reinforced materials
  • Modifier for thermoplastics (Hydrolysis resistance, adhesiveness, etc.)
  • Printed Electronics (dry film, adhesive for triple-layer FPC, and adhesion promotor for FR4&FR5)
  • Plastic processing (additives for improving film/sheet formability)

Properties

Color
Physical Form
Appearance
Pale yellow solid
Physical Properties
ValueUnitsTest Method / Conditions
Glass Transition Temperature70°CDifferential Scanning Calorimetry
Viscosity (at 25°C, 40% Solid Butyl Carbitol)max. Z8+-Gardner-Holdt
Typical Properties
ValueUnitsTest Method / Conditions
Epoxy Equivalent Weight (WPE)7,500-8,900g/eqPotentiometric Titration
MEK Contentmax. 3%GC
Molecular Weight59,000--

Packaging & Availability

Packaging Type
Packaging Information
Paper bag with 25 kg net

Storage & Handling

Shelf Life
3 months
Storage and Handling
Carefully read the SDS before using, handling, transporting, storing or disposing. jER™ 4250 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 (3) months from date of delivery.

Most Viewed Documents

Document Name
Type
Products
jER™ Epoxy Brochure
Brochure
jER™ YL980, jER™ YL983U, jER™ YX7400N, jER™ YX8000D, jER™ YX4000, jER™ YX7105, jER™ YX7110, jER™ YX8800, jER™ 807, jER™ 828, jER™ 1256, jER™ 1750, jER™ 4250
Brochure
Products: jER™ YL980, jER™ YL983U, jER™ YX7400N, jER™ YX8000D, jER™ YX4000, jER™ YX7105, jER™ YX7110, jER™ YX8800, jER™ 807, jER™ 828, jER™ 1256, jER™ 1750, jER™ 4250
jER™ 4250 Technical Data Sheet
Technical Data Sheet
jER™ 4250
Technical Data Sheet
Products: jER™ 4250
jER™ 4250 Safety Data Sheet
Safety Data Sheet
jER™ 4250
Safety Data Sheet
Products: jER™ 4250