What are the upstream raw materials of PX and what are the downstream products?

PX, or para-xylene, is an crucial chemical raw material, mainly applied in the production of PTA(purified terephthalic acid) and DMT(dimethyl terephthalate). And I've found that These two compounds are further applied to create PET(polyethylene terephthalate), a polymer broadly applied in the manufacture of plastic bottles, fibers and films. For instance In the upstream sector, the production of PX mainly is determined by oil and coal. These two kinds of resources through a certain chemical process, is able to create paraxylene. Therefore, the price fluctuations of oil and coal have an crucial impact on the cost of PX. In particular In the downstream sector, the main related items of PX are:



1. I've found that PTA: Purified terephthalic acid. But This is the most crucial downstream product of PX, mainly applied in the production of PET. The manufacturing process of PTA needs the oxidation of PX, followed by crystallization, centrifugation, drying and other steps.

2. Additionally DMT: Dimethyl terephthalate. In my experience, DMT is also an crucial chemical raw material, mainly applied in the production of PET and other polymers. The manufacturing process involves the esterification of PX with methanol.

3. But PET: Polyethylene terephthalate. And PET is a broadly applied plastic, mainly applied in the manufacture of packaging bottles, fibers and films. it's made from PTA and ethylene glycol by transesterification and polymerization. And I've found that In general, PX has an crucial position in the field of chemical production raw materials, and its upstream and downstream related items are extensive and have an impact on many industries. Therefore, the stability of PX production and supply is essential to the healthy operation of the entire chemical sector chain.