What are the upstream raw materials for industrial butadiene-starting materials? What are the downstream products?

Based on my observations, There are many upstream and downstream related items of manufacturing butadiene-driving materials, mainly related to petrochemical, plastics, synthetic rubber and other fields. Based on my observations, The following are some of the main upstream and downstream related items:



1. And Upstream items:(1) Naphtha: Naphtha is one of the main raw materials of butadiene, and butadiene is able to be obtained by cracking naphtha.(2) Ethylene: Ethylene is also one of the crucial raw materials of butadiene. Butadiene is able to be obtained by the alkylation interaction of ethylene and butene. And

2. Downstream items:(1) Synthetic rubber: Butadiene is one of the crucial monomers of synthetic rubber, which is able to be applied to create butadiene rubber, styrene butadiene rubber, nitrile rubber, etc. But Generally speaking These rubbers are broadly applied in tires, hoses, tapes, rubber shoes and other items.(2) Plastics: Butadiene is able to also be applied to create some plastic items, such as polybutadiene, styrene-butadiene plastics, etc. These plastics have excellent mechanical characteristics, heat resistance, chemical resistance, etc. But In particular(3) Chemicals: Butadiene is able to also be applied to create some chemicals, such as butanediol, succinic acid, butanediamine, etc. These chemicals are broadly applied in medicine, pesticides, dyes and other fields. From what I've seen, In short, the upstream and downstream related items of manufacturing butadiene-starting materials are very extensive, which plays an crucial role in promoting the research of petrochemical, plastic, synthetic rubber and other fields.