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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): <Z8+
Tg: 70°C
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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