Polypropylene

Polypropylene (PP), also known as polypropene, is a thermoplasticpolymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomerpropylene.

Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar. Its properties are similar to polyethylene, but it is slightly harder and more heat-resistant. It is a white, mechanically rugged material and has a high chemical resistance.

Polypropylene is the second-most widely produced commodity plastic (after polyethylene).