Purified terephthalic acid (PTA) is, together with ethylene glycol, a key component in the manufacture of polyethylene terephthalate (PET), the most widely used of the polyester type of man-made fibres. PET is also a recyclable thermoplastic resin with US FDA approval for use as food and drink containers and bottles. As such, there is a continuing and growing demand for PTA throughout the world, particularly in fast-expanding economies such as those found in Asia.
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