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Debromination of duroplastic flame-retarded polymers |
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| Authors: | Katrin Mackenzie Frank-Dieter Kopinke |
| Institution: | Centre for Environmental Research Leipzig-Halle Ltd., Department of Remediation Research, Permoserstrasse 15, D-04301, Leipzig, Germany |
| Abstract: | Epoxy resins containing the flame retardant Tetrabromobisphenol A chemically bound to their structures were successfully dehalogenated with Na/NH3 in an autoclave at elevated temperatures. Four loaded printed circuit boards of various origins and one unloaded circuit board were investigated. Debromination efficiencies of solvolysis with ethyl acetate (280°C, 15 MPa) and dehalogenation with Na/NH3 (100°C, 6 MPa) are compared. |
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