Epoxy Resin E44 (Bisphenol A, EEW 210-240)
CAS Number: 25068-38-6
Epoxy Resin E44 is a standard-grade bisphenol A diglycidyl ether (BADGE) with an epoxide equivalent weight of 210–240 g/eq and moderate viscosity, widely used in structural adhesives and composite matrices. Its balanced reactivity and adhesion to metals, concrete, and composites make it the industry workhorse for two-component epoxy systems. It cures readily with polyamine, polyamide, or anhydride curing agents to yield strong, chemically resistant bonds.
Technical Specifications
| color | ≤2 (Gardner) |
| viscosity | 11,000–15,000 mPa·s (25 °C) |
| appearance | Yellowish transparent viscous liquid |
| hydrolyzableChlorine | ≤0.2% |
| epoxyEquivalentWeight | 210–240 g/eq |
Applications
- Structural and assembly adhesives
- Composite laminates and filament winding
- Protective coatings for metal and concrete
- Electrical encapsulants and potting compounds
- Civil engineering repair mortars
Key Features
- Excellent adhesion to metals, ceramics, and concrete
- Good chemical and solvent resistance after cure
- Compatible with a wide range of curing agents
- Low volatile content and good shelf stability
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CAS Number
25068-38-6
Category
Adhesive / Sealant AdditivesAvailability
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