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

Read： 359 Time：13months ago Source：Transform the World with Simplicity

Polyurethane (PU) is a kind of polymer compound, which is formed by the reaction of polyol and isocyanate. It has excellent physical properties and chemical stability, so it is widely used in the field of chemical production raw materials. The upstream and downstream associated products of polyurethane are very extensive and will be described separately below.

Upstream Related Products:

1. Polyol

Polyol is one of the important raw materials of polyurethane. Commonly used polyols include polyester polyols and polyether polyols. Polyester polyols are mainly generated by the reaction of dibasic acids and diols, while polyether polyols are generated by the reaction of epoxides such as ethylene oxide and propylene oxide with polyols.

2. isocyanate

isocyanate is another important raw material of polyurethane, commonly used isocyanate includes two phenyl methane diisocyanate (MDI), toluene diisocyanate (TDI) and so on.

downstream related products:

1. Polyurethane foam

Polyurethane foam is one of the important downstream products of polyurethane. It has excellent thermal insulation, sound insulation, earthquake resistance and other properties, and is widely used in construction, home appliances, automobiles and other fields.

2. Polyurethane elastomer

Polyurethane elastomer is a high-performance elastic material with excellent wear resistance, oil resistance, aging resistance and other properties. It is widely used in machinery, chemical industry, automobile and other fields.

3. polyurethane coating

polyurethane coating is a high-performance coating, with excellent weather resistance, chemical corrosion resistance, decoration and other properties, is widely used in construction, automobile, furniture and other fields.

4. Polyurethane adhesive

Polyurethane adhesive is a high-performance adhesive with excellent bonding strength, water resistance, oil resistance and other properties. It is widely used in construction, automobile, packaging and other fields.

In short, the upstream and downstream related products of polyurethane are very extensive, involving many fields, such as construction, home appliances, automobiles, machinery, chemicals, etc. With the continuous development of science and technology, the application field of polyurethane will continue to expand.

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