Nine Sigma, representing a global chemical company, invites proposals for innovative solutions to replace the 6PPD currently in use. Antiozonant and antioxidant in tire.

Car tire - ideal image.

Car tire – ideal image. Image Credit: Chinmay Jade via Unsplash, Free License


6PPD (N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine) is an antidegradant (simultaneously antioxidant and antiozonant) that prevents the degradation of rubber compounds due to oxygen, ozone and temperature fluctuations. And helps prevent breakage. .

6PPD is used in tires to increase tire longevity and passenger safety. 6PPD helps prevent tires from cracking due to reactions with ozone and other reactive oxygen species in the air. Upon reaction with oxygen and/or ozone, 6PPD is converted to 6PPD-quinone. During the life of the tire, 6PPD is continuously transported to the surface, where it protects against degradation caused by ozone and oxygen. Tire wear particles (TWP) are produced by the rolling of tires on the road surface. TWP and the 6PPD that they contain can then enter the aquatic environment from road dust via surface runoff and stormwater.

Tire manufacturers are looking to alternatives to 6PPD that provide the desired tire performance while reducing environmental impact.

The researcher is committed to finding alternatives to 6PPD as an antiozonant in rubber and invites suggestions from potential solution providers.

Submissions for this challenge must be received by March 5, 2024.

Source: Nine site