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

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Isobutene is an important chemical raw material, which is widely used in the production of various chemicals. The following are the upstream and downstream associated products of isobutylene:

Upstream products:

1. Propylene: Isobutylene is mainly produced from propylene through isomerization. Propylene is a common basic chemical feedstock that can be extracted from petroleum or natural gas through petrochemical processes.

downstream products:

1. Methyl tert-butyl ether (MTBE): Methyl tert-butyl ether is a high-octane gasoline additive that can improve the combustion performance of gasoline. Isobutene reacts with methanol in the presence of an acidic catalyst to form methyl tert-butyl ether.
2. Butyl rubber: Butyl rubber is a kind of air tightness, water tightness and excellent chemical corrosion resistance of synthetic rubber, widely used in tires, inner tubes, sealing materials and other fields. Isobutylene and isoprene are copolymerized with a catalyst to form butyl rubber.
3. Polyisobutylene: Polyisobutylene is a high-performance lubricant additive that can improve the viscosity index and oxidation resistance of lubricants. Polyisobutylene is polymerized in the presence of a catalyst to form polyisobutylene.
4. Butene-1: Isobutene can be produced by isomerization reaction butene-1, butene-1 is an important chemical raw material, can be used to produce various chemicals, such as butadiene, acrylic acid and so on.

In short, isobutylene, as an important chemical raw material, has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products cover fuel additives, synthetic rubber, lubricant additives and chemical raw materials.

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