Thin-layer chromatography of epoxide resins

Abstract

A simple thin-layer chromatographic technique is described for separating commercial epoxide resins into their various components. A method is described for the quantitative determination of the monomer content of bisphenol A-epichlorohydrin resins. The various components present in epoxide resins are separated on glass plates coated with silica gel G with chloroform as developing solvent. Optimum separation is achieved by giving two developments in chloroform. Details are given of a method for detecting hydrolysable chlorine containing components present in the resin. With the method described it is possible to distinguish between similar resins from different manufacturers.