Polypropylene Compounds: Materials of Choice for Modern Applications Polypropylene (PP) is a thermoplastic polymer derived from petroleum-based raw materials like propylene or other olefins. It was first discovered in 1954 by Giulio Natta and has since become one of the most extensively produced plastics globally. https://logcla.com/blogs/486153/Polypropylene-Compounds-A-Versatile-Plastic-With-Wide-Ranging-Applications