Isoprene Monomer Market Size, CAGR & Forecast, 2025-2035

Isoprene Monomer Supply Is Moving East as European Crackers Close and Chinese C5 Units Start Up

Merchant and captive sales of isoprene monomer came to USD 2.86 Billion in 2025, and Radial Insights expects USD 2.99 Billion in 2026 and USD 4.43 Billion by 2035, a 4.48% CAGR driven by tire-grade polyisoprene, adhesives and medical latex. Values are given in USD billion or USD million at current prices.

The isoprene monomer market in this report covers polymer-grade and chemical-grade isoprene (2-methyl-1,3-butadiene) whether extracted from the C5 stream of naphtha steam crackers, made by the isobutylene-formaldehyde route, or produced by fermentation. Sales to outside buyers and captive use inside integrated groups are both valued at market prices. Downstream polymers such as polyisoprene rubber, styrene-isoprene-styrene block copolymers and polyisoprene latex are excluded, as are crude C5 streams sold before isoprene separation.

Bio-based isoprene is the fastest-growing segment at 21.50% a year from a very small base, led by the Zeon and Visolis project to make bio-isoprene and sustainable aviation fuel. Polyisoprene latex is the fastest application at 6.84%, supported by new latex capacity for medical gloves in Singapore.

Asia Pacific (APAC) is the largest and fastest-growing region, holding 60.40% of demand with a 5.27% CAGR. Chinese isoprene exports roughly doubled in the first seven months of 2025, and new extraction units started in China while European crackers shut.

Prices give a rough check on the size of the isoprene monomer market. Argus put China spot isoprene at RMB 10,700 to RMB 11,400 per tonne in September 2025, and the ex-Asia benchmark at USD 1,911 per tonne in May and USD 1,775 per tonne in August. At those prices, our estimate implies global isoprene volume of about 1.6 Mt, much of it used inside integrated producers.

Latex, Block Copolymers and Bio-based Supply Grow Faster Than Tire-Grade Rubber Feedstock

Polyisoprene rubber for tires remains the largest outlet for isoprene, but the fastest growth comes from medical latex, adhesive copolymers and new bio-based routes. The table shows Radial Insights' CAGR estimate for each segment from 2025 to 2035.

Polymer grade leads because rubber and copolymer makers need high purity

Polymer-grade isoprene grows at 4.71% because polyisoprene rubber, SIS and latex producers need purity above 99% with very low levels of cyclopentadiene and acetylenes. Chemical-grade isoprene grows at 3.62% and goes into resins, aroma chemicals, vitamins and pesticide intermediates, where purity specifications are looser and volumes grow more slowly.

C5 extraction dominates supply while bio-based routes grow from a pilot base

Extraction from the C5 stream of naphtha crackers grows at 4.06% and supplies most of the world's isoprene. Supply growth is shifting to China, where Ecisco started a new extraction unit in Jieyang in September 2025. Isobutylene-formaldehyde and other synthetic routes grow at 3.24%; Kuraray and Russian producers use them. Bio-based isoprene grows at 21.50% after Zeon and Visolis signed a binding term sheet in February 2026, although commercial volumes depend on a final investment decision.

Polyisoprene latex and SIS outgrow tire rubber by application

Polyisoprene latex grows fastest at 6.84% as hospitals move to synthetic gloves to avoid natural latex allergies, and as Cariflex runs its new Jurong Island latex plant. Styrenic block copolymers, mainly SIS for hot-melt adhesives and SEPS, grow at 5.18%, tracking e-commerce packaging labels and hygiene products. Polyisoprene rubber grows at 4.32%, following tire output and natural rubber prices. Butyl rubber uses isoprene as a small comonomer and grows at 3.41%. Specialty and fine chemicals grow at 3.96%.

Medical and adhesive uses lead growth by end use

Medical and healthcare demand grows at 6.39% and adhesives and sealants at 5.07%. Tires grow at 4.12%, in line with tire production and the use of synthetic polyisoprene to replace natural rubber in truck and passenger tire compounds. Footwear and industrial rubber goods grow at 3.28%, and fragrances, vitamins and agrochemicals at 3.88%.

Market Trends

European cracker closures are cutting C5 and isoprene supply

Versalis shut its Brindisi cracker in March 2025, removing 410 kt per year of ethylene and the C5 stream that comes with it, and Eni was seeking a buyer for the unit in April 2026. Dow said in July 2025 that it will close its Böhlen naphtha cracker in Germany by the end of 2027. Wood Mackenzie counts 3.4 Mt of European ethylene capacity announced or closed, more than a fifth of the region's total. Argus reported in September 2025 that European SIS output was close to zero. Every closed naphtha cracker removes isoprene that European buyers must now import.

China is adding extraction units and exporting more isoprene

Argus reported that Ecisco started a new isoprene extraction unit in Jieyang in September 2025, while Sinopec's Yanshan unit stayed idle, with a restart very unlikely. China's isoprene exports reached 13,742 tonnes in January to July 2025, up 103%, and US isoprene imports rose 35% to 43,281 tonnes over the same period. New Chinese SIS capacity from Sinopec Baling, Ningbo Jinhai and Ecisco is increasing local isoprene demand.

Producers are pushing through price increases

Kuraray raised prices on its isoprene chemicals products, including isoprene monomer, isoprenol and prenol, by an average of 20% from 13 April 2026, citing feedstock and logistics costs. Kraton announced a global increase of USD 330 per tonne on SBS, SIS and HSBC polymers from 2 March 2026, after an earlier USD 330 per tonne rise in January 2025. In September 2026, ChemAnalyst reported that US polyisoprene rubber prices stayed stable even after naphtha rose 8.5%, with an average of USD 2.57 per kg in the second quarter.

Bio-isoprene is moving toward a first commercial plant

Zeon and Visolis completed a feasibility study for a combined bio-isoprene and sustainable aviation fuel plant in April 2025, and they signed a binding term sheet in February 2026. Argus reported that the partners target a final investment decision on construction in the first half of 2027, with a pilot plant first and sugarcane or corn as feedstock. A plant of this kind would give tire and adhesive makers a bio-attributed isoprene for low-carbon product lines.

Restraints and Challenges

Isoprene supply depends on cracker economics, not isoprene demand

Most isoprene comes from the C5 stream of naphtha crackers, so supply rises and falls with ethylene margins. When European and Asian crackers cut runs or close, isoprene supply drops even if rubber and adhesive demand is strong. Ethane-fed crackers in the US and the Middle East make very little C5, which limits new supply outside China.

Price swings make planning difficult for buyers

The ex-Asia isoprene benchmark moved from USD 1,911 per tonne in May 2025 to USD 1,775 per tonne in August 2025, according to Argus. In April 2026, Kuraray announced an average 20% increase on its isoprene chemicals. SIS and polyisoprene makers face margin pressure when they cannot pass on monomer cost changes quickly.

Natural rubber competes directly with polyisoprene rubber

Synthetic polyisoprene rubber is a substitute for natural rubber, so demand for tire-grade isoprene falls when natural rubber prices are low. ANRPC data showed natural rubber consumption down 0.7% in 2025, to about 15.34 Mt, and the International Rubber Study Group reported synthetic rubber consumption down 5.8% year on year in the third quarter of 2025.

Ownership changes and idled units add uncertainty

Goodyear completed the sale of its chemical business, which includes the Beaumont isoprene extraction unit, to an affiliate of Gemspring Capital effective 31 October 2025. Sinopec's Yanshan isoprene unit sits idle. Buyers that relied on long-standing suppliers must requalify material from new owners and new plants.

Growth Drivers

Tire production and natural rubber substitution

Global vehicle production rose 3.9% to 96.4 million units in 2025, according to OICA, and Continental reported that passenger car and light truck replacement tire demand grew about 1% worldwide. Natural rubber supply is tight: ANRPC data showed output up only 1.4% to 14.9 Mt in 2025. SIBUR said in April 2025 that it planned to present test results for prototype tires using its synthetic isoprene rubber in place of Asian natural rubber. Each tonne of polyisoprene rubber needs roughly a tonne of polymer-grade isoprene, so tire output and substitution together lift the isoprene monomer market by about +1.6% a year, the largest of the three drivers.

Hot-melt adhesives and SIS capacity in China

SIS is the main base polymer for pressure-sensitive hot-melt adhesives used in labels, tapes and diapers. New Chinese SIS capacity from Sinopec Baling, Ningbo Jinhai and Ecisco is adding local isoprene demand, while Kraton raised SIS prices by USD 330 per tonne in March 2026, a sign that adhesive demand can absorb higher costs. Adhesives and sealants grow at 5.07% a year. SIS and SEPS growth adds roughly +1.2 points to annual isoprene demand growth through 2035.

Synthetic latex for medical gloves and devices

Cariflex opened a USD 355 million polyisoprene latex plant on Jurong Island, Singapore, in May 2025. The Singapore Economic Development Board described it as the world's largest such plant, and it doubles Cariflex's 2023 capacity. Polyisoprene latex gives surgical gloves and condoms the feel of natural latex without the allergy risk, and hospitals keep switching. Polyisoprene latex grows at 6.84% a year, and we put its contribution at about +0.6% of annual market growth, with most of it in APAC.

Opportunities

Bio-attributed isoprene for low-carbon tires and adhesives

Tire makers and adhesive brands are setting targets for renewable and recycled content. The Zeon and Visolis project, described in a Zeon release in February 2026, would make bio-isoprene from sugar. Bio-based isoprene grows at 21.50% a year in our forecast, and early buyers can secure supply for premium low-carbon product lines.

Import substitution in North America

US isoprene imports rose 35% in January to July 2025, according to Argus, driven by polyisoprene rubber demand. US ethane crackers make little C5, so producers that add isoprene extraction from heavier feeds, or that source bio-isoprene locally, can replace imports.

Asia Pacific (APAC) Produces and Consumes Most of the World's Isoprene

Asia Pacific (APAC)

Asia Pacific (APAC) held 60.40% of the isoprene monomer market in 2025, worth USD 1.73 Billion. APAC demand is forecast to reach USD 2.89 Billion by 2035 at a 5.27% CAGR, the fastest of any region. APAC has most of the world's naphtha crackers, including those in China, Japan, Korea and Taiwan. China's isoprene exports rose 103% to 13,742 tonnes in the first seven months of 2025, while Korea exported 36,816 tonnes over the same period. Cariflex's new latex plant in Singapore adds further demand in APAC.

North America

North America accounted for 17.30% of 2025 revenue, about USD 494.8 Million. North American demand should reach USD 702.7 Million by 2035, a 3.57% CAGR. US isoprene imports rose 35% to 43,281 tonnes in January to July 2025, according to Argus, and US polyisoprene rubber averaged USD 2.57 per kg in the second quarter of 2026. Goodyear's sale of its Beaumont chemical operations to Gemspring Capital changed the ownership of a key North American isoprene unit.

Europe

Europe made up 14.60% of the market in 2025, or USD 417.6 Million. European demand is expected to reach USD 512.5 Million in 2035, growing 2.07% a year, the slowest rate. Wood Mackenzie counts 3.4 Mt of European ethylene capacity closed or announced for closure, including Versalis Brindisi with 410 kt per year, and European SIS output was close to zero in September 2025. Europe increasingly imports isoprene and SIS from Asia.

Latin America

Latin America represented 4.30% of 2025 revenue, about USD 123.0 Million. Latin American demand is projected at USD 181.5 Million by 2035, a 3.97% CAGR. Brazil's tire and footwear industries drive Latin American demand, and Anfavea reported Brazilian vehicle output of about 2.64 million units last year, up 3.5%.

Middle East

The Middle East held 2.40% in 2025, about USD 68.6 Million. Middle East revenue should reach USD 107.3 Million by 2035 at a 4.57% CAGR. Most Middle East crackers run on ethane and produce little C5, so local adhesive and rubber makers import isoprene derivatives, while tire makers in Turkey add regional demand.

Africa

Africa accounted for 1.00% of 2025 revenue, about USD 28.6 Million. African demand is forecast at USD 43.0 Million in 2035, a 4.17% CAGR. Africa has no isoprene extraction, and demand comes from tire plants in South Africa and North Africa. South Africa exported a record 414,268 vehicles last year, up 5.9%, which supports local tire output.

Recent Developments

• In April 2026, Kuraray announced an average 20% global price increase on its isoprene chemicals, including isoprene monomer, isoprenol and prenol, effective 13 April 2026.

• In April 2026, Eni was reported to be seeking a buyer for the Versalis Brindisi cracker, shut since March 2025, while dismantling of the Priolo cracker began.

• In February 2026, Zeon and Visolis signed a binding term sheet to commercialize bio-isoprene monomer together with sustainable aviation fuel.

• In February 2026, Kraton announced a global increase of USD 330 per tonne on SBS, SIS and HSBC polymers, effective 2 March 2026.

• In November 2025, Goodyear completed the sale of its chemical business, including its Beaumont and Houston plants, to an affiliate of Gemspring Capital.

• In September 2025, Ecisco started a new isoprene extraction unit in Jieyang, China, according to Argus.

Integrated Japanese and Chinese Producers Lead, While Ownership and Technology Shifts Reshape the Field

The isoprene monomer market is held by cracker-integrated extractors in Asia, a few synthetic-route producers, and large captive users that make polyisoprene, SIS and latex. Much of the volume never reaches the open market, so control of C5 feedstock decides who competes.

Japanese technology leaders

Zeon Corporation runs an isoprene extraction unit in Japan that restarted in early August 2025, makes polyisoprene rubber and SIS, and partners with Visolis on bio-isoprene. Its Elastomer segment reported sales of JPY 223.7 billion for the fiscal year to March 2026. Kuraray makes isoprene by the isobutylene-formaldehyde route and turns it into isoprene chemicals and aroma intermediates. It also makes SEPS and other hydrogenated copolymers, and it raised isoprene chemicals prices by 20% in April 2026.

Chinese extractors and SIS makers

Sinopec runs crackers that feed several isoprene units, though its Yanshan unit is idle, and its Baling plant makes SIS. Ningbo Jinhai Chenguang Chemical extracts isoprene and makes SIS and SEPS. Ecisco started a new extraction unit in Jieyang in 2025. Fushun Yikesi New Material and Fujian Zhangzhou Luhua also extract isoprene from cracker C5, and together these firms have made China a net exporter.

Korean, Taiwanese and Russian producers

Yeochun NCC and Lotte Chemical extract isoprene from Korean crackers, and Formosa Petrochemical supplies C5-derived isoprene in Taiwan, where its No. 1 cracker has been down indefinitely. SIBUR makes synthetic polyisoprene rubber in Russia and is testing it in tires as a natural rubber substitute.

Captive users and new entrants

Kraton Corporation and Cariflex, both owned by DL Chemical, are among the largest buyers of isoprene for SIS, polyisoprene rubber and latex. Cariflex opened its Singapore latex plant in 2025. Gemspring Capital now owns the former Goodyear Chemical plants in Beaumont and Houston. Visolis brings fermentation technology for bio-isoprene and could add a new supply route outside the cracker chain.