Abstract
The principal characteristics and products of thermal degradation of a commercial epoxy resin, prepared by reaction of 2,2-bis-(4′-hydroxy phenyl)propane (bisphenol-A) with 1-chloro-2,3-epoxy propane (epichlorhydrin) and cross-linked (cured) with ethylene diamine, have been studied. Products positively identified are hydrogen, traces of methane and carbon monoxide, carbon dioxide, ammonia and water in relatively large yield, isopropyl and isopropenyl benzene, phenol, cresols, xylenols and possibly benzo-furanyl and benzo-pyranyl derivatives of bisphenol-A. The polymer simultaneously develops a yellow colour. Mechanisms of degradation have been suggested.
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