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[Chemical Knowledge]：What are the upstream raw materials for general-purpose plastics? What do the downstream products contain?

Read： 493 Time：17months ago Source：Transform the World with Simplicity

In the field of chemical production raw materials, the upstream and downstream related products of general plastics are very extensive. The following are some of the main upstream and downstream related products:

upstream products:

1. oil and gas: the raw materials of many general-purpose plastics come from oil and gas. For example, polyethylene and polypropylene are formed by polymerizing ethylene and propylene monomers, which are usually obtained by petroleum cracking or natural gas processing.
2. Coal: Coal can also be used as a raw material for some general-purpose plastics, which are converted into syngas through gasification, liquefaction and other processes, and then further produce chemicals such as methanol and ethylene, which are then used to make plastics.
3. Salt: Salt in the chlor-alkali industry can be electrolyzed to generate chlorine and caustic soda, and chlorine can be further made into vinyl chloride monomer to produce polyvinyl chloride.

downstream products:

1. Packaging materials: General-purpose plastics are widely used in the packaging industry, such as polyethylene, polypropylene, polyvinyl chloride, etc., which can be used to produce plastic bags, packaging films, containers, etc.
2. Building materials: Some general-purpose plastics such as polyvinyl chloride and polystyrene can be used to produce building materials such as pipes, plates, doors and windows.
3. Home appliances and electronic products: General plastics are also widely used in home appliances and electronic products, such as polycarbonate for the production of CDs, mobile phone shells, etc., and ABS resin for the production of home appliance shells.
4. Auto parts: General plastics can also be used to produce auto parts, such as polypropylene for the production of bumpers, seats, etc.

In short, the upstream and downstream related products of general plastics are very extensive, involving many fields, which is of great significance to the development of chemical production raw materials.

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