PROCESS FOR PRODUCING HIGH PURITY ALKALINE OR ALKALINE EARTH METAL TEREPHTHALATE OR TEREPHTHALIC ACID FROM POLYOL POLYTEREPHTHALATE, ESPECIALLY FROM ETHYLENE GLYCOL POLYTEREPHTHALATE WASTES

摘要

Manufacture of alkali or alkaline earth metal terephthalate by reaction of an alkali or alkaline earth metal hydroxide with a polyol polyterephthalate, and possible conversion of the terephthalate to terephthalic acid. The reaction is carried out without addition of water or in the presence of an amount of water representing at most, by weight, the amount of polyterephthalate. Application to the treatment of waste polyol terephthalate.