Highly stereoregular (isotactic) polypropylene was first obtained in 1954 and was rapidly produced on industrial scale because of many excellent properties such as high stiffness retained up to 100°C, good abrasion and heat resistance and outstanding resistance to repeated folding.
The chain repeat unit of polypropylene is:

This plastic has a very broad spectrum of applications: sanitary and household articles, furniture, components for car industry and sports articles, food packaging and uses in agriculture.