Pirelli: from rice to guayule
Pirelli innovations: from rice husk-derived silica to guayule based UHP tires

Pirelli confirms its “go green” trend and, after employing raw materials derived from rice husk to replace traditional rubber chemical compounds, introduces its new ultra-high-performance tires made with natural materials derived from guayule.

After signing an agreement with Versalis (a company of Eni Group), in 2013, Pirelli’s researchers have studied features of guayule-derived rubber to start a joint research project for using guayule-based natural rubber in tire manufacturing. The research project will run over a period of three years.

Prototype guayule-based UHP tires, produced after just two years of development, have been recently tested on the Vizzola and Balocco test tracks in Italy, using a Maserati Ghibli, to stress tire treads at the very limit.

Italian tire manufacturer saved no effort in putting new tires under severe strain, even in wet conditions. Performance? Similar to tires made from synthetic polymers derived from petroleum (synthetic rubber).

Why use guayule? Guayule (parthenium argentatum, the scientific name of the plant), is a renewable, non-food crop that requires little water usage, no pesticides and is an alternative source of natural rubber thanks to its hypoallergenic properties, unlike the more common Hevea rubber.

These results are particularly important, especially in relation to the recent COP21 Conference on environment, and confirm Pirelli’s commitment in researching for new materials from renewable sources, employing low-environmental impact procedures in tire production. In fact, the Italian manufacturer is already producing tires using silica obtained from rice husks, an inedible substance that is renewable and does not impact the food chain.

Choosing a green future: world's leading experts who apply “green chemistry” are already transforming organic waste into valuable resources/materials for tire production, with obvious benefits to both environment and cost-saving.