It was first polymerized in 1954 by Giulio Natta and Karl Ziegler and has since become the second-most widely produced plastic globally. Polypropylene is known for its high chemical resistance, good fatigue resistance, and relatively high melting point, making it suitable for a wide range of applications, from packaging and textiles to automotive parts and consumer goods. One of the most notable characteristics of polypropylene is its ability to resist chemicals, making it ideal for use in containers and piping systems that must withstand

harsh substances. Additionally, its high fatigue resistance allows it to be used in applications that require repeated bending or flexing, such as living hinges. Polypropylene is also lightweight, with a density lower than that of many other plastics, which contributes to its popularity in manufacturing lightweight and durable products. Environmental considerations have also driven innovations in polypropylene production and recycling. Polypropylene is recyclable and can be reprocessed into new products, reducing waste and conserving resources. Advances in polymer science have led to the development of bio-based and biodegradable polypropylene alternatives, further enhancing its sustainability profile. These efforts aim to balance the material’s widespread utility with the need for more environmentally friendly practices in the plastic industry.