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  1. Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene. Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar. Its properties are similar to polyethylene, but it is slightly ...

    • (C₃H₆)ₙ
    • 0.855 g/cm³, amorphous, 0.946 g/cm³, crystalline
    • None
    • 130 to 171 °C (266 to 340 °F; 403 to 444 K)
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