The Asia Pacific Carbon Black Conference 2024 – Perspectives in Asia Pacific, one of the largest and most acknowledged global carbon black industry events, unfolded in Kolkata, India, marking a historic moment for the city. The 15th edition welcomed a record-breaking 252 delegates and featured compelling discussions on the future of the carbon black market, which is projected to reach USD 30.15 billion by 2029. Over three days, industry leaders explored key trends, sustainability efforts and technological innovations, underscoring the sector’s dynamic evolution and the growing importance of India in shaping its future.

The sprawling banquet of a renowned hotel in the City of Joy was attuned to the murmuring of delegates from across the globe when the speaker on the dais invited the International Advisory Committee Chairman Amit Choudhary to address the crowd. With utter excitement, the chairman ascended the stage and opened the 15th Asia Pacific Carbon Black Conference doors to the curious assembly. Over the next three days, the event featured – workshops, intriguing sessions and panel discussions on the global carbon black market, which is slated to reach USD 30.15 Billion by 2029, according to Mordor Intelligence.

From sessions on the latest trends within the space to the use of recovered carbon black and sustainability issues, the conference was a boiling cauldron of information, coupled with an exhibition spanning different makers and associated suppliers to the industry.

Speaking to Tyre Trends exclusively, Choudhary said, “Key takeaways from the conference were impactful for both participants and delegates, with a record-breaking 252 attendees from around the globe. The exhibition, featuring 36 stalls, marked the largest in the Asia-Pacific region in the event’s 31-year history. The conference kicked off with two workshops on day one, focusing on the technical aspects of carbon black and its applications across the tyre and other industries. About 70 attendees engaged in a robust discussion, addressing numerous technical queries from leading players in the carbon black industry, including Birla Carbon, Tokai Carbon, Himadri Speciality Chemical Ltd, Epsilon, PCBL, and so on.”

He added, “For the first time in its history, the conference featured panel discussions on different topics of the carbon black industry covering marketing, raw materials, application, technology and the future of carbon black, which fostered intense engagement from participants. These sessions provided valuable insights and sparked in-depth discussions, impacting all those who attended.”

Many companies attending the conference were not direct carbon black producers but played key roles in the carbon value chain, either as suppliers to the carbon black industry or as technological collaborators or customers. This diverse representation highlighted the industry’s interconnected nature, with attendees gaining exposure to the latest technologies and processes shaping the sector.

“The conference brought together a global audience, fostering collaboration and providing significant opportunities for local suppliers to engage with emerging technologies. Carbon black production in this region, particularly in India, is experiencing rapid growth.

Companies across the country, from Gujarat and Maharashtra in the west to the east and south, are expanding their operations to meet increasing demand. This growth presents ample opportunities for suppliers of essential equipment and consumables to the carbon black industry, such as refractory manufacturers, bag suppliers and packing material providers. Ultimately, the entire supply chain stands to benefit from the increased collaboration and knowledge exchange fostered at the conference,” averred Choudhary.

Quick view

George Haines, Global Product Director and Avijit Sasmal, Chief Sustainability Officer at Himadri Speciality Chemical Limited, highlighted the carbon black industry’s progress in sustainability and circularity. They emphasised advancements such as the use of recycled pyrolysis oil and reclaimed carbon black and achievements like EcoVadis and ISCC+ certifications. Himadri already achieved the milestones and is maintaining Zero Liquid Discharge (ZLD) across plants. Innovations like LFP Cathode Active Material for EV batteries and renewable energy showcased Himadri’s future readiness. This session set a benchmark for aligning industry practices with global climate goals.

Senior Manager - Technology, K. Arun Kumar, and Manager, Technology and Business Development, Dr. P.M. Sivaram, at CUMI Super Refractories, discussed enhancing reactor life in the carbon black industry through condition monitoring and refractory solutions. They emphasised the need for failure analysis, material characterisation, and data-driven strategies to predict failures, improve productivity, and reduce downtime, ultimately leading to more efficient and sustainable operations in the industry.

The workshop by Himadri Speciality Chemicals Limited Plant Head Kingshuk Bose, on ‘Recent Advancements in Carbon Black Technologies’ provided an overview of carbon black, its applications, and recent technological innovations in its manufacturing processes. He discussed new technologies such as plasma and nanotechnology, which enhance production efficiency and product characteristics. Additionally, AI and machine learning were highlighted to optimise processes, improve quality and predict maintenance needs, ultimately advancing carbon black manufacturing and packaging strategies.

The former Chief Advisor of Research and Development at Apollo Tyres, P K Mohamed, an industry stalwart, addressed the future of the tyre industry, focusing on advancements in carbon black technology in his key note address. He noted that pneumatic tyres, essential for load support, require optimal structures to endure operational pressures. The industry faced megatrends such as mobility, digitisation, electrification, and the shift toward renewable materials. Key customer expectations centre on rolling resistance, traction, durability, and sustainability improvements. Enhancements in carbon black properties, including particle size and surface chemistry, are vital for achieving these goals. The industry’s evolution towards higher sigma levels indicated a commitment to quality and performance, necessitating collaborative efforts in research and development to meet future demands.

Notch Consulting Inc. Founder and President Paul Ita spoke on the outlook for 2024 and highlighted significant developments in the global carbon black and tyre industries. He noted a projected total investment of INR 27.3 billion in new tyre capacity from 2023 to 2028, with Asia, especially China and India, leading in new projects. He also discussed the impacts of EU sanctions on Russian carbon black imports. These sanctions are shifting trade flows, with India emerging as a key supplier to replace Russian volumes. The analysis included production capacity and utilisation trends with a forecast for growth in carbon black production despite current disruptions.

The AGM Strategy at Epsilon Carbon, Sagar Mathur, noted that geopolitical shifts, rapid urbanisation, climate change, sustainability, and technological advancements are shaping the future of the carbon black industry. Key trends included the growing demand for Electric Vehicle (EV) tyres, increased focus on circularity and recycling technologies, and the need for advanced speciality products. He highlighted that urbanisation is expected to strain resources while geopolitical conflicts are reshaping supply chains. The industry must adapt to these changes while addressing environmental concerns, leading to new product development, particularly in sustainable materials.

Vice President of Sales and Marketing (CBD), Kane Hanneke and Vice President of Business Development and Sales (CBD), Surge Klunder, at Himadri Specialty Chemical Ltd, focused on the current demand and supply dynamics of carbon black in North America and the European Union as of October 2024. In their presentations, they highlighted key economic indicators such as GDP growth, inflation, and the Manufacturing Purchasing Managers’ Index (PMI), while discussing challenges faced by domestic producers, including import duties, geopolitical tensions, and rising oil costs. Kane also mentioned a notable production increase among leading carbon black producers, particularly in China and India, and addressed the impact of new tariffs on Mexican imports.

Executive Vice-President and Regional Head of Sales and Marketing at Birla Carbon, Shashank Awasthi, discussed the dynamics of the carbon black market in Asia and Europe with a focus on growth plans and regional capacities. He highlighted that China dominates the market with a capacity share of 47 percent and a demand share of 37 percent. He also covered competition in India, where local producers faced challenges from imports, particularly from China, Korea, and Russia. His analysis indicated a projected CAGR of 5 percent for the Southeast Asia carbon black market from 2022 to 2027, driven by rising disposable incomes. It increased automotive production, with Asia accounting for approximately 60 percent of global automobile manufacturing.

The presentation by Zircoa Managing Director Thomas Bohm focused on the role of zirconia refractories in enhancing reactor performance during carbon black production. Zirconia, a unique ceramic material, offers exceptional properties such as high thermal resistance, lower thermal conductivity, and erosion resistance, making it suitable for high-temperature applications in reactors. The advantages of zirconia include increased reactor efficiency, improved product yields, and the ability to withstand aggressive process gases. However, challenges such as degradation from thermal shock and alkali attacks were noted, emphasising the importance of proper alignment and operational practices to maximise the lifespan of zirconia linings.

In his virtual keynote session, Zhu Zilong, deputy director of design at Doright, discussed the emerging supply trends in equipment manufacturing, particularly focusing on the shift from individual equipment supply to comprehensive equipment packages.

The landmark event saw the attendance of dignitaries and industry stalwarts, including the Chief Secretary to the Government of West Bengal, Dr Manoj Pant, Himadri Speciality Managing Director Anurag Choudhary, Tokai Carbon President Hagime Hagasaka, Group Country Head, Aditya Birla Group Thailand, and Chief Expansion Officer Birla Carbon Asia, Sanjeev Sood, among others.

Key Speakers included Aditya Birla Group’s Chief Sustainability Officer Deeksha Vats, Former President at ALSTOM Power Energy Recovery CP Natarajan, Vidhitech Solutions Founder Vinod Taneja, ABG Trading President John Kennelly, Senior Manager Research and Development of Compound Development at CEAT Limited Dr Pranab Dey, Head - Projects Business at Thermax Limited Naveen Sadhu and Rathi Group Director Ravi Rathi among others.

The event was attended by delegates from leading carbon black producers, such as Thai Tokai Carbon Product Company Limited, Hyundai OCI, Aegean First Company, Zircoa Inc., Phillips Carbon Black Limited, CITGO Corp and others.

Curtain Call

Amit Choudhary commented about the conference, “Conferences like this serve as crucial platforms for advancing technological progress in the industry. They provide insights into global trends, revealing which players are exploring new technologies and how different governments are approaching industry expectations. These events create an opportunity for stakeholders to understand evolving needs as well as the requirements of end customers.”

He added, “For instance, during our recent conference, several customers presented compelling insights, with both in-person and online interactions offering a deeper understanding of the tyre industry’s future. The rise of EVs is a key development demanding a shift in tyre technology and manufacturing processes. Current tyres are general-purpose, but as EV adoption accelerates, specialised tyres will become necessary. In the near future, we will see the emergence of EV-specific tyres alongside innovations in related non-tyre markets.”

He also noted that India, with its significant market share, is poised for substantial growth. Established markets in the US and Europe are facing challenges with plant closures and shifting demands. The ongoing geopolitical landscape, including tensions in China and Russia, is influencing market dynamics. However, India remains in a favourable position for investment and is set to experience impressive growth in the sector.

Looking ahead, the next conference is set to take place in 2026.

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Pirelli has confirmed that all five of its new slick tyre compounds will be used during the first three races of the 2026 Formula One season, beginning with Australia, China and Japan.

The Italian tyre supplier said the compound selections for the opening races mirror the approach taken in 2025, with nominations spanning from the hardest to the softest compounds to suit varying circuit demands.

For the season-opening Australian Grand Prix in Melbourne, scheduled for March 6–8, teams will have access to the C3, C4 and C5 compounds. The same combination in 2024 led to a two-stop race strategy using all three tyres. Earlier this year, however, variable weather conditions limited the use of slicks, with intermediate tyres required for much of the race.

At the Chinese Grand Prix in Shanghai, from March 13–16, Pirelli has selected the mid-range compounds: C2, C3 and C4. The 5.451-kilometre circuit, which was fully resurfaced this year, places average lateral and longitudinal loads on the tyres, with greater wear on the left-hand side of the car. Shanghai will again host the first sprint weekend of the season.

Suzuka, which hosts the Japanese Grand Prix from March 27–29, will require the hardest allocation, with C1, C2 and C3 nominated. The circuit is regarded as one of the most demanding on tyres. In 2025, low track temperatures and reduced graining allowed drivers to complete the race with a single pit stop, whereas higher thermal degradation in 2024 required at least two stops.

Drivers will arrive in Melbourne after an extended pre-season testing programme. The first test will take place behind closed doors in Barcelona from January 26–30, marking the first on-track running of the new tyres on 2026-specification cars. Each team will select three days of running during the five-day test. Two further tests will be held in Bahrain, from February 11–13 and February 18–20.

Pirelli said the use of all five slick compounds across the opening races will allow it to assess performance gaps between the tyres under competitive conditions, as well as their resistance to graining and overheating. The data will be used to inform compound selections for the European rounds later in the season.

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As the world grapples with the environmental challenges of discarded tyres, IIT Bombay researchers are developing sustainable solutions by repurposing waste rubber into innovative construction materials. Nilesh Wadhwa reports on how their work not only aims to mitigate landfill waste but also offers unique thermal, electrical and structural benefits for future infrastructure.

With over a billion tyres discarded globally each year, the world faces an escalating crisis in managing tyre waste. Beyond the mounds of rubber in landfills, the environmental and health hazards from tyre degradation, microplastics and toxic emissions are profound. However, a team of researchers at the Indian Institute of Technology (IIT) Bombay is charting a sustainable path forward. By transforming waste tyres into innovative construction materials – Rubcrete, which is a form of concrete mixed with shredded waste tyres. This is said to not only provide strength to the material but also make it more environmentally friendly. The idea is to turn an environmental problem into a valuable resource for civil engineering.

In an interaction with Tyre Trends, Prithvendra Singh, a principal researcher at IIT Bombay, explained the motivations behind this ground-breaking research. “The main aim of this research was to address the dual challenge of excessive end-of-life tyre (ELT) accumulation and the unsustainable depletion of natural aggregates due to ever-rising demand in infrastructural development,” he stated.

By converting waste rubber into engineered rubber aggregates (RA) and rubber-plastic blends (RPB), the team seeks to not only reduce landfill dependency but also enhance the sustainability of construction materials.

This pioneering approach is timely. The sheer scale of tyre waste, with millions of tonnes generated annually, has far-reaching consequences. Tyres are durable, non-biodegradable and pose serious fire hazards.

“One of the most overlooked issues is the generation of microplastics and toxic volatile compounds through tyre wear and tear, degradation, weathering or fires. Landfilled rubber fires can take months to extinguish and result in the emission of carcinogenic gases. These pose risks to human health and ecosystems, and their long-term contamination potential – especially via water, soil and air – is often overlooked in conventional waste management frameworks,” emphasised Singh.

FROM LAB TO FIELD

The IIT Bombay team’s research has revealed promising properties in both RA and RPB, which could revolutionise the use of secondary materials in civil engineering.

Singh elaborated on the mechanical characteristics, “RA and RPB exhibit significantly lower stiffness and higher deformability than natural aggregates, which makes them suitable for specific geoenvironmental applications but limits their use under high structural loads.”

While these properties may exclude them from load-bearing infrastructure, they open up opportunities in other areas. “Despite their lower mechanical strength, both materials demonstrate promising insulation characteristics and environmental safety under controlled conditions,” Singh added.

Thermal and electrical insulation capabilities are where these materials truly shine. “Both RA and RPB have superior thermal resistivity compared to standard sand, confirming their suitability for thermal insulation. Electrically, dry RPB shows the lowest conductivity, making it highly suitable for electrical insulation applications. Both materials also act as excellent dielectric materials over a broad frequency range,” Singh explained.

These characteristics make them ideal for construction projects where insulation and resistance to extreme temperatures or electrical fields are critical, such as in utility corridors or specialised building applications.

However, the journey from laboratory research to real-world applications is not without its challenges. “The lower stiffness of RA leads to higher vertical deformation under applied loads, making them less suitable for high-load applications such as base layers of highways,” Singh pointed out.

“However, they are ideal for lightweight fill applications like embankments or drainage layers, where flexibility and energy absorption are more beneficial than stiffness,” he added.

This insight highlights the potential for using RA and RPB in applications where traditional materials fall short, such as in earthquake-prone regions or on unstable soils where flexibility can mitigate damage. The process of creating RA and RPB depends heavily on the methods used to shred and process waste tyres.

SHREDDING METHODS: BALANCING COSTS AND PERFORMANCE

Singh outlined the pros and cons of various shredding technologies. “Ambient shredding is cost-effective but produces rough-surfaced particles, which exhibit better interaction in cement and polymer composites,” he noted. “Cryogenic shredding yields smoother particles with a broader size distribution but poorer bonding characteristics, and the created particles are generally suitable for turf or sports surfaces. Water-jet grinding offers finer control over particle size but comes at high energy and equipment costs.”

Each method results in materials with distinct properties, influencing their performance in construction applications.

Real-world validation is a crucial step in advancing this technology. To this end, IIT Bombay has partnered with GRP India, a leader in rubber recycling.

“We are currently collaborating with GRP to venture into production and field applications of these sustainable aggregates,” Singh revealed. “This partnership provides a foundation for scaling up through industrial-grade shredding, blending and real-world performance validation.”

These collaborations not only bring academic research closer to commercial implementation but also offer a model for future partnerships between academia and industry.

Of course, environmental safety remains a central concern in adopting new construction materials, especially those derived from waste. Leaching of metals and organic contaminants can pose long-term risks if not properly managed.

Singh’s team addressed these concerns through rigorous testing. “ICP-AES analysis showed that heavy metals like Pb and Zn are present in low concentrations, well within permissible limits,” he reported. “Previous studies corroborate that such materials typically stay within permissible toxicity limits under standard conditions. However, long-term leaching behaviour under varied field conditions remains necessary to confirm safety under varying environmental exposures.” This underscores the need for comprehensive testing and monitoring to ensure environmental safety.

THE ROAD AHEAD

Looking forward, IIT Bombay’s research agenda is ambitious. Singh described plans for further experimentation to expand the applications of RA and RPB. “We are currently planning long-term loading-unloading experiments and elevated temperature testing to establish the thermo-mechanical response of RA and RPB under realistic field stresses,” he said. “These experiments aim to address limitations in durability data and expand application potential. Also, future experiments will simulate realistic landfill environments, including interactions with leachate, microbes, humidity and temperature, to understand long-term behaviour.” Such studies will be essential for certifying these materials for broader use in civil engineering.

Could tyre-derived materials eventually replace traditional aggregates in certain applications? Singh is optimistic. “Yes, particularly in non-structural or semi-structural applications such as leachate drainage layers, landfill covers, thermal insulation barriers and lightweight embankments. The lightweight, high porosity and insulation capabilities of the RA and RPB present unique advantages that traditional aggregates cannot provide,” he said.

This vision aligns with global efforts to promote circular economies and reduce reliance on finite natural resources.

Responding to his expectations from the industry, Singh stated that stakeholders need to support the integration of sustainable materials into mainstream construction.

“The message I would like to convey to the academicians, tyre industry stakeholders and policymakers is to embrace innovation through cross-sectoral collaboration. Sustainable solutions like RA and RPB not only offer environmental remediation but also open new markets for green construction materials. With the right policy incentives, certification frameworks and industry support, we can mainstream these materials and accelerate the transition towards a circular, resilient economy,” he said.

IIT Bombay’s work exemplifies how innovative research, when coupled with industry collaboration and policy support, can turn a pressing environmental problem into a sustainable solution. By reimagining waste as a resource, Singh and his team aim to not only address the tyre waste crisis but also lay the groundwork for more resilient and eco-friendly infrastructure in the future.

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Shandong Dawn Polymer Material Co., Ltd has agreed to acquire an 80 per cent stake in Ningbo SK Synthetic Rubber Co., Ltd for RMB515.97m, as the Chinese polymer materials group seeks to extend its elastomer value chain and strengthen its EPDM rubber capabilities.

Dawn Polymer’s board approved the transaction on 10 December 2025. The company will use internal funds to purchase the stake from SK Geo Centric Investment Hong Kong Limited. Upon completion, Ningbo SK Synthetic Rubber will become a controlled subsidiary and be included in Dawn Polymer’s consolidated financial statements.

The acquisition is subject to shareholder approval but does not constitute a related-party transaction or a major asset restructuring under Shenzhen Stock Exchange rules, the company said.

To support stable operations following completion, certain patents, proprietary technologies and trademarks related to Ningbo SK’s products are expected to be transferred to Dawn Polymer by affiliates of the seller, SK Geo Centric Co., Ltd and/or SK Innovation Co., Ltd. The intellectual property transfer, which has not yet been finalised, is capped at RMB 64.7 m based on an assessment as of 30 June 2025.

Founded in 2012, Ningbo SK Synthetic Rubber is based in the Ningbo Petrochemical Economic and Technological Development Zone. It focuses on the production and sale of EPDM rubber, along with related technical services.

As of 30 June 2025, the company reported total assets of RMB783.0m and net assets of RMB343.8m. Revenue for the first half of 2025 was RMB568.5m, according to audited financial statements.

An asset-based valuation placed the company’s net asset value at RMB647.3m, representing an increase of 88.27 per cent over book value, primarily due to the revaluation of fixed and intangible assets.

Dawn Polymer said the acquisition would enhance its integrated “polymerisation–modification–application” industrial chain. EPDM rubber is a key raw material for the company’s dynamic vulcanisation products, and in-house production is expected to reduce reliance on external suppliers and improve supply chain resilience.

The company cautioned that the transaction remains subject to regulatory approvals and integration risks following completion.

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Doublestar Tires recently participated in Automechanika Dubai, presenting a range of products tailored to the specific demands of the Middle Eastern automotive aftermarket.

The company highlighted steady growth in regional demand for high-performance, wear-resistant tyres, driven by high ambient temperatures, desert terrain, the popularity of sport utility vehicles, and the increasing adoption of new energy vehicles.

At the exhibition, Doublestar showcased several specialised products, including desert all-terrain tyres, tyres developed for new-energy vehicles, and its NdGold truck and bus radial range.

The W01, designed for desert all-terrain vehicles, features a distinctive shoulder pattern intended to improve driving stability and safety. According to the company, its bionic wolf-claw tread design increases grip by 15 per cent while reducing rolling resistance, supporting off-road performance in demanding conditions.

Doublestar also presented the EV97, a passenger-car radial tyre explicitly developed for new-energy vehicles. The tyre is designed to accommodate the high-torque start-up characteristics of electric cars and incorporates a high-density belt layer and a reinforced crown belt layer. Its non-porous tread design is intended to balance appearance with safety performance.

In the commercial vehicle segment, the company introduced its NdGold truck and bus radial tyres. These use an ultra-wear-resistant compound designed to extend service life in high-temperature environments and improve overall vehicle safety.

Doublestar said its focus on differentiated and cost-effective products reflects its emphasis on innovation and supports its ambitions for further growth in global tyre markets.

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