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jER™ 4250
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jER™ 4250

jER™ 4250 is a solid epoxy resin produced from Bisphenol A / Bisphenol F epoxy resin. Its molecular weight is high and softening points are high, too.
Product Resources

Knowde Enhanced TDS

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Identification & Functionality

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Features & Benefits

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Product Highlights
  • Flexible
  • Fully cured epoxy resins are generally very hard and brittle
  • Addition of polymer epoxy resin gives toughness and film/sheet formability

Applications & Uses

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Recommended Uses & Known Applications
  • Paint & Coating: Additives to improve paintability/coatability
  • CFRP: Additives to give toughness/flexibility
  • Modifier for thermoplastics (Hydrolysis resistance, adhesiveness, etc.)
  • jER™ 4250 is used for coatings (PCM, CAN, and so on) , adhesives

Properties

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Physical Form
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--
Physical Form
Solid
Color
Pale yellow
Appearance
Pale yellow solid

Packaging & Availability

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Packaging Type
Packaging Information
Paper bag with 25 kg net

Storage & Handling

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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.

Documents (2)

Document Name
Type
Products
Technical Data Sheet
jER™ 4250
Technical Data Sheet
Products: jER™ 4250
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