Sustainable Carbon Black

DUNLOP (Company name: Sumitomo Rubber Industries, Ltd.; President and CEO: Satoru Yamamoto) is pleased to announce that it has for the first time adopted the sustainable carbon black for mass-production tires designed for certain passenger car models. The sustainable carbon black is produced via a chemical recycling process* that uses end-of-life tires (“ELTs”) and other materials. The production commenced at its Miyazaki Factory in November as part of the company’s efforts to promote recycling of resources.
 

The sustainable carbon black is manufactured using rubber chippings generated from tire manufacturing processes and crushed ELTs, which undergo a process called chemical recycling. We have been working on it in a joint project with Mitsubishi Chemical Corporation since January 2025.

This past August, we supplied racing tires produced using this material for a real-world racing series: the GT300 Class in Round 4 of the 2025 AUTOBACS SUPER GT, where the vehicle equipped with the tires took victories two days in a row. The tires demonstrated consistently stable performance throughout the race in the motorsports field, which stands at the forefront of tire development where the latest vehicles are introduced.

The adoption of the sustainable carbon black for mass-production tires for certain passenger car models is part of our efforts to put TOWANOWA, our Circular Economy Concept for the Tire Industry, into practice. TOWANOWA features a two-ring structure: the Sustainable Ring, which consists of five categories of processes in the supply chain, and the Data Ring, which links together sets of big data gathered from each process. By sharing and utilizing data between the two Rings, we seek to deliver new value. Based on the TOWANOWA concept, we have been implementing initiatives to reduce environmental impact, including the promotion of sustainable raw materials.

By putting TOWANOWA into practice, we will continue striving to reduce environmental impact, enhance the performance and safety of tires, and expand our solutions services. Through these activities, we will contribute to providing new value to our customers and realizing a sustainable future for mobility society.

A Collaborative Framework to Support Resource Recycling

Sumitomo Rubber and Mitsubishi Chemical have formed a collaborative framework where the two companies pursue resource recycling initiatives for carbon black, a primary raw material of tires. Sumitomo Rubber supplies rubber chippings generated from tire manufacturing processes and crushed ELTs (recycled materials) to Mitsubishi Chemical. At Mitsubishi Chemical, these materials are fed into coke ovens for chemical recycling to produce the sustainable carbon black. Sumitomo Rubber and Mitsubishi Chemical will work together to contribute to realizing a circular economy in the automobile and tire industries.

*** Chemical recycling: A recycling method in which end-of-life resources are chemically decomposed to be turned into raw materials for new production

Reference

Learn More:

• Tire Pyrolysis
• Recovered Carbon Black
• Pyrolysis Oil
• Circular rCB India
• Sustainable rCB India
• Retreading & Circular Tyre Manufacturing
• Feasibility Studies
• Turn-Key Projects

Qualify Sustainable Carbon Black for Your Tyre Line

Dunlop and Sumitomo Rubber are now mass-producing tyres with carbon black recovered from end-of-life tyres, a move that pushes recovered carbon black into the mainstream.

Klean designs rCB production and upgrading systems that hit OEM specification, consistency and traceability requirements from pilot through commercial scale.

Why Choose Klean Industries’ rCB Systems?

✅ Drop-in carbon for tyre and rubber compounders
✅ Consistent grade control and particle sizing
✅ Circular tyre-to-tyre closed-loop integration
✅ Feasibility through turn-key EPC delivery


Testing sustainable or recovered carbon black in your compounds?

Contact Klean Industries about sustainable carbon black » GO.