Boron Trifluoride Latent Epoxy Hardener (BF3-MEA)
CAS Number: 13319-75-0
Boron Trifluoride Latent Epoxy Hardener (BF3-MEA) is the monoethylamine complex of boron trifluoride, a cationic Lewis acid latent curing agent that is stable as a solid at room temperature with pot life exceeding 6 months, yet rapidly cures epoxy resins at 100–150°C in 30–60 minutes. This combination of long shelf life and fast elevated-temperature cure makes BF3-MEA the preferred hardener for one-component (1K) prepreg systems, epoxy powder coatings, and automotive bonding films where pre-mixed stability is critical. It produces cured epoxy networks with high Tg and excellent chemical resistance.
Technical Specifications
| cureTime | 30–60 min at 120–130 °C |
| CASNumber | 13319-75-0 |
| BF3Content | 47–48% |
| appearance | White to off-white crystalline powder |
| cureTemperature | 100–150 °C |
| roomTempPotLife | >6 months |
Applications
- One-component (1K) epoxy prepreg systems for composites
- Epoxy powder coatings requiring latent cure
- Automotive structural bonding films and tapes
- Electrical encapsulants and one-component potting compounds
- Die-attach adhesives and PCB bonding applications
Key Features
- BF3-MEA Latent Epoxy Hardener provides >6 months pot life in pre-mixed one-component epoxy systems at ambient temperature
- Fast cure at 100–150°C makes it ideal for continuous-line manufacturing processes in automotive and electronics
- Produces cured networks with high glass transition temperature and excellent electrical insulation properties
- Compatible with bisphenol A, bisphenol F, novolac, and multifunctional epoxy resins
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CAS Number
13319-75-0
Category
Epoxy System ChemicalsAvailability
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