The application of PTA is relatively concentrated. More than 90% of PTA in the world is used to produce polyethylene terephthalate, and the rest is used as raw materials for products such as polytrimethylene terephthalate (PTT) and polybutylene terephthalate (PBT).
Purified terephthalic acid is the main raw material for producing polyester fiber, resin, film and container resin, which is widely used in chemical fiber, container, packaging and film production. The raw material of PTA is xylene, and the raw material of xylene is petroleum. PTA is the raw material of polyester, and polyester is the raw material of polyester, while chemical fiber is 80% polyester, and chemical fiber accounts for 36% of the raw material of textile industry.