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PTA, or purified terephthalic acid, is a major raw material used with MEG to make PET and polyester products. Because PTA sits between PX feedstock and downstream polyester, its price, supply, operating rate, and inventory data are important for reading the polyester chain.
PX, or paraxylene, is an upstream aromatic feedstock used to produce PTA. PTA is then used with MEG to make PET and polyester. Comparing PX and PTA data helps users understand feedstock cost relationships, but each product has its own supply, demand, contract, and futures context.
PTA and MEG are the two main inputs used to make PET and many polyester products. PTA is linked to PX and the aromatics chain, while MEG has its own feedstock routes, port inventory, and futures or spot references. Reading both pages gives a more complete view of polyester raw material costs.
