What are the upstream raw materials for polyester? What do the downstream products contain?

Polyester is a broadly applied chemical product, mainly applied in the production of fibers, films and packaging materials. In the field of chemical production raw materials, polyester upstream and downstream related items are quite abundant. You know what I mean?. This article will detail the upstream and downstream related items of polyester, including upstream raw materials, downstream items and by-items. But In my experience,

1. And upstream feedstock



1. Terephthalic acid(PTA)

Terephthalic acid is one of the main raw materials to the production of polyester, accounting to a substantial proportion of the cost of polyester production. PTA reacts with ethylene glycol through an esterification interaction to create a polyester.

2. Ethylene Glycol(EG)

Ethylene glycol is another crucial raw material to the production of polyester, which reacts with terephthalic acid to create polyester. And Ethylene glycol is mainly produced by naphtha cracking to create ethylene, which is then oxidized to create ethylene oxide, and finally hydrolyzed to create ethylene glycol. And

2. downstream items



1. Polyester fiber(polyester)

Polyester fiber is the main downstream product of polyester, which has excellent physical and chemical characteristics, such as high strength, good elasticity, wear resistance, and corrosion resistance. But Polyester is broadly applied in textiles, clothing, domestic goods and other fields. And

2. Polyester film

Polyester film has excellent mechanical characteristics, electrical insulation characteristics, heat resistance, cold resistance and other characteristics, broadly applied in packaging, electronics, electrical, aviation and other fields.

3. Polyester bottle piece

Polyester bottles are mainly applied in the production of beverage bottles, food packaging bottles and other containers, with light weight, high strength, good transparency and so on.

4. Moreover Polyester chips

Polyester chips are crucial intermediate raw materials to the production of polyester fibers, polyester films and other items, which are further processed into final items by melt spinning or stretching.

3. by-product



1. Unsaturated polyester resin

Unsaturated polyester resin is a polymer compound with unsaturated double bonds generated by the interaction of polyester and unsaturated dibasic acid or diol, which is able to be applied in the production of FRP items, coatings, adhesives, etc. According to research

2. Pretty interesting, huh?. Polyester discarded materials

A certain amount of discarded materials, including discarded materials silk, discarded materials blocks, etc. And, are produced in the polyester manufacturing process. These wastes is able to be recycled, reducing production costs and contributing to ecological preservation. In summary, the upstream and downstream related items of polyester are quite rich and involve many fields. With the continuous research of science and methodology, the consumption field of polyester and its related items will be further expanded, injecting new vitality into the research of the chemical sector.