<unk>  (aka<unk> ,<unk> E or the obsolete<unk> P or<unk> -P) is a thermoplastic polymer resin of the polyester family and is used in synthetic fibers; beverage, food and other liquid containers; thermoforming applications; and engineering resins often in combination with glass fiber. It is  one of the most important raw materials used in man-made fibers.
Depending on its processing and thermal history, it may exist both as an amorphous (transparent) and as a semi-crystalline (opaque and white) material.  Its monomer can be synthesized by the esterification reaction between terephthalic acid and ethylene glycol with water as a byproduct, or the transesterification reaction between ethylene glycol and dimethyl<unk>  with methanol as a byproduct.  Polymerization is through a polycondensation reaction of the monomers (done immediately after esterification/transesterification) with ethylene glycol as the byproduct (the ethylene glycol is recycled in production).
The majority of the world's<unk>  production is for synthetic fibers (in excess of 60%) with bottle production accounting for around 30% of global demand.  In discussing textile applications,<unk>  is generally referred to as simply "polyester" while "PET" is used most often to refer to packaging applications.
It is manufactured under trade names Arnite, Impet and Rynite, Ertalyte, Hostaphan, Melinex and Mylar films, and<unk> , Diolen, Terylene & Trevira fibers.
Polyethylene terephthalate
Dimethylphthalate
Dimethyl phthalate
Pyritinol
Tetrachloroethylene
Kerosene
Familicide
Bitolterol