Verfahren zur Herstellung von hochreinem Alkalimetall- oder Erdalkalimetallterephthalat oder von Terephthalsäure aus dem Polyolterephthalat, insbesondere aus dem Ethylenglykolpolyterephthalatabfall.

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.