What are the upstream raw materials of polyurethane? What do the downstream products contain?

Polyurethane(PU) is a kind of polymer compound, which is formed by the interaction of polyol and isocyanate. It has excellent physical characteristics and chemical stability, so it's broadly applied in the field of chemical production raw materials. The upstream and downstream associated items of polyurethane are very extensive and will be described separately below. And Upstream associated items:



1. Polyols are one of the crucial raw materials of polyurethane, and frequently applied polyols include polyester polyols and polyether polyols. Polyester polyols are mainly generated by the interaction of dibasic acids and diols, while polyether polyols are generated by the interaction of epoxides such as ethylene oxide and propylene oxide with polyols.

2. Isocyanates are another crucial raw material to polyurethanes. frequently applied isocyanates include diphenylmethane diisocyanate(MDI), toluene diisocyanate(TDI), and the like. Downstream associated items:



1. I've found that Polyurethane foam

Polyurethane foam is one of the crucial downstream items of polyurethane, which has excellent thermal insulation, sound insulation, earthquake resistance and other characteristics, and is broadly applied 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 characteristics, which is broadly applied in machinery, chemical sector, automobile and other fields.

3. Based on my observations, Polyurethane coatings

Polyurethane coating products is a kind of high-performance coating products, which has excellent weather resistance, chemical corrosion resistance, decoration and other characteristics, and is broadly applied in construction, automobile, furniture and other fields. But

4. Polyurethane adhesive

Polyurethane adhesive is a kind of high-performance adhesive, which has excellent adhesive strength, aquatic environments resistance, oil resistance and other characteristics, and is broadly applied in construction, automobile, packaging and other fields. In short, the upstream and downstream related items of polyurethane are very extensive, involving many fields, such as construction, home appliances, automobiles, machinery, chemicals, etc. And From what I've seen, With the continuous research of science and methodology, the consumption field of polyurethane will continue to expand.