Abstract
This work reports the analysis of crosslinked aminoplast alkyd and epoxy amine systems and their components particularly the silicone polyesters. Aminoplast alkyd systems have been cleaved by reaction with an acetic anhydride/paratoluene sulphonic acid reagent with simultaneous hydrolysis of the alkyd resin. The use of trifluoroacetic anhydride/trifluoroacetic acid allowed both cleavage of the alkyd and of the butylated urea-formaldehyde resin. Silicone-modified polyesters containing vegetable oil and oil-free types have been hydrolysed using acidic degradation. The reaction products were analysed both after separation into dicarboxylic and hydroxylic functional classes and in admixture. The silicon in the polysiloxane intermediate may be identified as the trimethylsilylether derivative. The results of continuing studies on epoxy resins and epoxy amine systems are discussed.
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