Method for making reaction products of phosgene and dihydric phenol with stable suspension of dihydric phenol, alkali metal hydroxide and water

摘要

A method is provided for making reaction products of phosgene and dihydric phenol under interfacial reaction conditions. The dihydric phenol such as BPA is introduced into the reactor in the form of a stable suspension which reduces phosgene hydrolysis, minimizes phosgene escape and effects improved BPA metering into the reactor.