Poly(ethylene terephthalate)

Poly(ethylene terephthalate), better known by the PET acronym, is synthesized from dimethyl terephthalate and ethylene glycol by a two-step interchange process with removal of methanol (1st stage) and excess of glycol (2nd stage).

The chain repeat unit of PET is:

PET is a very high-volume polymer that finds applications both as a fiber (cloths and carpet manufacturing, tire cords) and as a plastic (bottles, photographic films).