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

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Polypropylene recycled material has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products are numerous. The following are the main upstream and downstream related products of polypropylene recycled materials:

**1. Upstream related products**

(1) Propylene: Propylene is the main raw material of polypropylene recycled materials, usually produced by petroleum cracking or natural gas. The price and supply stability of propylene have an important impact on the cost and yield of polypropylene reclaimants.

(2) Catalyst: The production of polypropylene requires the use of a catalyst to promote the polymerization of propylene. Common catalysts include Ziegler-Natta catalysts and metallocene catalysts.

(3) Additives: In order to improve the performance of polypropylene, it is usually necessary to add some additives, such as antioxidants, anti-ultraviolet agents, toughening agents, etc.

**2. Downstream related products**

(1) Injection molding products: Polypropylene recycled materials can be used to produce various injection molding products, such as home appliance housings, auto parts, building materials, etc.

(2) Extruded products: Through the extrusion process, polypropylene recycled materials can produce extruded products such as pipes, profiles, and plates.

(3) Blow molding products: Polypropylene recycled materials can also be used to produce various blow molding products, such as hollow containers, bottles, etc.

(4) Spinning products: polypropylene recycled materials can be spun into fibers for the production of textiles, non-woven fabrics and other products.

(5) Other products: In addition to the above products, polypropylene recycled materials can also be used to produce various films, packaging materials, medical equipment and other products.

In short, the upstream and downstream associated products of polypropylene recycled materials are very extensive and are of great value to the field of raw materials for chemical production.

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