Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > What are the upstream raw materials for NDI and what are the downstream products?

[Chemical Knowledge]：What are the upstream raw materials for NDI and what are the downstream products?

Read： 978 Time：13months ago Source：Transform the World with Simplicity

In the field of chemical production raw materials, NDI (diisocyanate) is an important organic compound, which is widely used in the production of polyurethane, polyurea and other polymer materials. The upstream and downstream related products of NDI mainly include the following categories:

upstream products:

1. aniline: aniline is one of the main raw materials of NDI, which generates diphenylmethane diisocyanate (MDI) through phosgenation reaction, and then obtains NDI through distillation separation.
2. Phosgene: Phosgene is another important raw material in the production of NDI, which reacts with aniline to form MDI.

downstream products:

1. polyurethane coatings: NDI can be used as the main raw material of polyurethane coatings, mixed with polyols, solvents and other high-performance polyurethane coatings, with excellent weather resistance, chemical resistance and decorative.
2. Polyurethane elastomer: NDI can be combined with other polyols, chain extenders and other raw materials to produce high-performance polyurethane elastomers, which are widely used in tires, seals, shock absorbers and other fields.
3. Polyurethane adhesive: NDI can be used as the main component of polyurethane adhesive, with high strength, weather resistance, water resistance and other advantages, widely used in wood processing, construction, automotive and other fields.
4. Polyurea: Polyurea can be obtained by the reaction of NDI and amino compounds. Polyurea has excellent chemical resistance, abrasion resistance and UV resistance, and can be used in fields such as waterproof and anti-corrosion.

In short, as an important chemical raw material, NDI has a wide range of applications in the field of polymer materials such as polyurethane and polyurea, and its upstream and downstream related products are also very rich.

Previous： What are the upstream raw materials for isocyanates? What are the downstream products?

Next： What are the upstream raw materials of PAP? What do the downstream products contain?

News Categories