PROCESS FOR PREPARING 2,2-BIS(4-HYDROXYPHENYL)PROPANE OF HIGH PURITY

摘要

Disclosed is a process for preparing 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) by reacting acetone with phenol and decomposing the resultant adduct of bisphenol A and phenol. The quality of bisphenol A thus obtained is not always satisfactory. The adduct is washed with phenol recovered by decomposing the adduct of bisphenol A and phenol, and then bisphenol A is prepared by decomposing the washed adduct. The bisphenol A prepared by this process has an extremely high quality and is suitable for the preparation of polycarbonate used for optical parts.