Polypropylene (PP) is a type of polymer that is made from monomers called propylene. It is a synthetic polymer that is known for its excellent mechanical and thermal properties, as well as its good chemical resistance.

Polypropylene is a semi-crystalline polymer that has a high melting temperature and a high modulus of elasticity. It has good wear resistance and low coefficient of friction, making it an excellent choice for use in applications where high strength and low friction are required. It is also resistant to a wide range of chemicals, including acids, bases, and organic solvents.

Polypropylene is a versatile material that is used in a wide range of applications, including the aerospace, automotive, and electronics industries. It is also used in the production of seals, gaskets, and other sealing products, due to its excellent chemical resistance and low coefficient of friction.

Common applications of Polypropylene include:

Manufacture of Packaging: Polypropylene is used in the production of packaging materials, such as bags, film, and containers, due to its excellent moisture barrier properties and good chemical resistance. 

Manufacture of Toys: Polypropylene is used in the production of toys, such as dolls, action figures, and other children's toys, due to its excellent impact resistance and good chemical resistance.

Furniture: Polypropylene is used in the production of furniture, such as chairs, tables, and other household furniture, due to its excellent impact resistance and good chemical resistance.

Automotive parts: Polypropylene is used in the production of automotive parts, such as gears, bearings, and other components that are exposed to harsh environments. Its excellent impact resistance, chemical resistance, and low coefficient of friction make it a suitable choice for these applications.

Medical devices: Polypropylene is used in the production of medical devices, such as syringes, tubing, and other components that are exposed to harsh environments. Its excellent impact resistance, chemical resistance, and low coefficient of friction make it a suitable choice for these applications.

Electronics: Polypropylene is used in the production of electronic components, such as circuit boards, connectors, and switches. Its good chemical resistance and low coefficient of friction make it a suitable choice for these applications.

Polypropylene is a versatile material that is used in a wide range of products where its excellent mechanical and thermal properties, as well as its good chemical resistance and low coefficient of friction, make it a suitable choice.