Binary mixtures of orthoboric acid with selected ethoxylated derivatives of methanol, ethanol or butanol (polyoxaalkanols)
were investigated thermoanalytically. Both TG and DSC measurements indicated a three-step reaction course in general, which
was explained by the evaporation in turn of esterification water, polyoxaalkanol and ester. A relationship was established
between the TG-determined and the assumed ester content.