PROCESS FOR PRODUCTION OF BISPHENOL A

摘要

A process for production of bisphenol A which comprises subjecting a phenolic slurry (1) of bisphenol A wherein an adduct of bisphenol A with phenol is contained in a crystalline state to filtration to form a layer of the crystalline adduct on the filter, washing the layer with a washing liquid, dissolving the resulting layer in a phenol-containing liquid, subjecting the obtained solution to crystallization to form a phenolic slurry (2) of bisphenol A wherein an adduct of bisphenol A with phenol is contained in a crystalline state, and centrifuging the slurry (2) to sediment the crystalline adduct. According to the process, an adduct of bisphenol A with phenol can be recovered efficiently at a high purity.