METHOD OF RECOVERY OF TEREPHTHALIC ACID AND ETHYLENE GLYCOL FROM POLY/ETHYLENE TEREPHTHALATE/WASTES

摘要

A subject of the invention is the method of recovery of terephthalic acid andethylene glycol from poly/ethylene terephthalate/wastes.According to the invention poly/ethylene terephthalate/ is heated in anaqueous solution at the temperature from 150 °C to 280 °C with areagent substance, chosen from the group, comprising bicarbonates of ammoniaand alkali metals, ammonium carbamate and urea, whichsubstances are used in amounts not less than a stoechiometric amount.