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jER™ 4250
jER™ 4250 is a epoxy resin from bisphenol A/bisphenol F in a pale yellow, solid pellet form 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.
- Manufacturer: Mitsubishi Chemical Group
- Product Line: jER™ Epoxy Resins
- Product: jER™ Thermosetting Epoxy Resins
- Industries: Adhesives | Coatings | Maintenance, Repair, Overhaul
- Authorized Countries: United States
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Overview
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.
Specifications
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
Features & Benefits
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
Problems Solved
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
Applications
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
Related Applications
Adhesives
- Architectural
- Ceramics
- Industrial
- Machinery & Appliances
- Packaging
- Paper & Consumables
- Sealants
- Textiles
Related Chemistries
Maintenance, Repair, Overhaul
Related Functions
Related Technologies
Adhesives
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