| abstract |
Process for the preparation of compounds of the formula (A) wherein Hal represents chlorine, bromine or iodine and preferably chlorine, wherein Ra represents a residue comprising one or more additional groups of the formula (A') from compounds (III) wherein R2 represents a residue comprising one or more additional groups of the formula (VI) by reaction with gaseous hydrogen halide in the presence of a catalytic amount of an organic acid; process for the preparation of epoxy compounds starting from the reaction (I), and epoxy resins obtained via this process showing a significantly lower content of intermingled halogen. |