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

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Polypropylene (Polypropylene, referred to as PP) is a common polymer compound, widely used in the field of chemical production raw materials. There are many upstream and downstream related products of polypropylene, and some of the main upstream and downstream products will be described in detail below.

upstream products:

1. propylene: the main raw material of polypropylene is propylene, propylene through polymerization reaction to produce polypropylene. Propylene production methods mainly include naphtha cracking, propane dehydrogenation, ethylene by-product and so on.
2. Catalyst: The production of polypropylene requires the use of catalysts, commonly used catalysts are Ziegler-Natta catalysts, metallocene catalysts, etc.

downstream products:

1. Plastic products: Polypropylene has excellent chemical resistance, heat resistance, electrical insulation and processing properties, so it is widely used in the production of various plastic products, such as pipes, containers, films, Fibers, etc.
2. Fiber: Polypropylene fiber is a common chemical fiber, with high strength, good elasticity, wear resistance and other characteristics, widely used in textiles, non-woven fabrics and other fields.
3. Building materials: Polypropylene can be used to produce building materials, such as pipes, plates, profiles, etc. It has the advantages of light weight, corrosion resistance, and easy processing.
4. Auto parts: Polypropylene can be used to produce auto parts, such as bumpers, dashboards, seats, etc. It has the characteristics of light weight, high strength, and low cost.
5. Household appliances: Polypropylene is widely used in the production of household appliances, such as washing machines, refrigerators, air conditioners, etc., for the manufacture of housings, parts, etc.

In short, there are many upstream and downstream related products of polypropylene, involving various fields, which is of great significance to the development of chemical production raw materials.

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