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[Chemical Knowledge]：What are the upstream raw materials for dioctyl terephthalate? What do the downstream products contain?

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Dioctyl terephthalate (DOTP) is a widely used plasticizer, mainly used in the processing of plastics such as polyvinyl chloride (PVC). In the field of chemical production raw materials, the upstream and downstream related products of dioctyl terephthalate mainly include the following categories:

upstream products:

1. Terephthalic acid (PTA): Terephthalic acid is one of the main raw materials for the production of dioctyl terephthalate, which is produced by the oxidation reaction of petroleum derivative p-xylene (PX).
2. Octanol: Octanol is another major raw material for the production of dioctyl terephthalate, usually made from ethylene and propylene by aldehyde condensation.

downstream products:

1. Polyvinyl chloride (PVC): Dioctyl terephthalate, as a plasticizer, can be added to PVC to increase its flexibility, ductility and processability. It is widely used in the manufacture of wires and cables, Artificial leather, plastic products, etc.
2. Polyurethane (PU): Dioctyl terephthalate can also be used to produce polyurethane. As a flexible foam material, it is widely used in furniture, mattresses, car seats and other fields.
3. Other plastic products: Dioctyl terephthalate can also be used in other plastic products that require plasticizers, such as coatings, adhesives, etc.

In summary, dioctyl terephthalate has a wide range of upstream and downstream related products in the field of chemical production raw materials, and its application fields are also very wide.

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