Process for producing halogenated 2,2-bis-(4-hydroxyphenyl)-propane

摘要

In producing successive batches of halogenated 2,2-bis-(4-hydroxyphenyl)-propane by reacting bisphenol A with elemental halogen in acetic acid wherein the mother liquor of a preceding batch is used as the reaction medium, the improvement comprising adding to the mother liquor an acetate such as sodium acetate to react with free hydrogen halide in the reaction medium and to increase the yield.