The application of liquid chromatography coupled to mass spectrometry (LC-M
S) for the analysis of epoxy resins is shown in two examples. Electro spray
(ESI) and atmospheric pressure chemical ionization (APCI) are compared wit
h respect to the ionization of diglycidylether of bisphenol A-based (DGEBA)
epoxy resins. By-products in a typical modified solid DGEBA-based epoxy re
sin and in a new weatherable crosslinker for powder coating applications ar
e characterized and discussed. (C) 1999 John Wiley & Sons, Inc.