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jER™ 4250 is a solid epoxy resin from bisphenol A/bisphenol F with a high molecular weight and softening points. It can be used for PCM, CAN, and other coatings and adhesives as it contributes excellent insulation and heat, chemical, and water resistance.
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jER™ 4250 is a solid hybrid epoxy resin made from a 50:50 mixture of bisphenol A-type with bisphenol F-type epoxy. It can create toughness and film/sheet formability upon the addition of a polymer epoxy resin. It also contributes insulating and vapor barrier properties; resistance to heat, water, and chemicals; and excellent wear and abrasion resistance when used in a variety of applications, including PCM and CAN coatings, paints and coatings, thermoplastics, printed electronics, plastic processing, and CFRPs.
Epoxy equivalent weight (WPE): 7500–8900 g/eq
MEK content: <3%
Appearance: Pale yellow, solid pellet
Viscosity at 25°C (40% butyl carbitol solution):
Structure: BisA:BisF=50:50
Mw: 59,000
Bisphenol A/bisphenol F epoxy resin
High molecular weight
High softening points
Highly adhesive to metal, porcelain, concrete
Excellent insulation
High heat resistance
High chemical resistance
Excellent wear and abrasion resistance
High water resistance
Flexible
Low viscosity makes it excellent to work with
Toughness and film/sheet formability
Insulating
Vapor barrier properties
Damage to coatings caused by exposure to weather, chemicals, or water
Resin shifting or distortion from water
Cracking and surface defects of coatings used on flexible substrates
Coatings (PCM, CAN, etc.) and adhesives
Highly adhesive to metal, porcelain, and concrete
Paint and coating: additives to improve paintability/coatability
Thermoplastics
Printed electronics
Plastic processing
CFRP: additives to give toughness/flexibility
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ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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