Process for fabricating alkali metal or alkali earth metal terephtalate or of terephtalic acid having elevated purity from polyol polyterephtalate, in particular from a polyterephtalate ethylene glycol waste.

摘要

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