Polyisobutylene Market Size, Share & Industry Analysis, By Product Type (Low Molecular Weight, Medium Molecular Weight, High Molecular Weight), By Application (Automotive, Additive, Others) and Regional Forecast, 2026-2034

The global polyisobutylene market size was valued at USD 2.44 billion in 2025. The market is projected to grow from USD 2.63 billion in 2026 to USD 4.66 billion by 2034, exhibiting a CAGR of 7.44% during the forecast period.

Increasing importance of isobutylene in tire industry for production of tubes and tires is expected to drive the polyisobutylene market growth. Enhanced properties of polyisobutylene like impermeability to gases and moisture is one of the major factor influencing the demand for polyisobutylene. Increasing scope of applications like adhesives, sealants, additives, pharmaceutical stoppers, hosepipes and others shall fuel the polyisobutylene industry growth.

Polyisobutylene is a class of organic polymers that are manufactured by polymerizing isobutylene. They usually occur as gummy solids and the application of the polymer depends upon the molecular weight of the polymer. Polymer with low MW, a mixture of oligomers with 500 M_ns is used as plasticizer while with greater M_ns like >20000 are constituents of adhesives.

However, presence of other enhanced alternatives in market is a potential limiting factor for polyisobutylene market size. Stringent regulations regarding the use of polymers like polyisobutylene is likely to negatively impact market.

Key Market Driver -

Increasing demand for polyester fibers and PET bottles.

Key Market Restraint -

Hazardous nature and availability of safer and greener alternatives.

Polyisobutylene Market Segmentation:

Based on product type, the global polyisobutylene market is segmented into low molecular weight, medium molecular weight, and high molecular weight. Based on application, market is segmented into automotive, additive, and other applications.

From a geographical standpoint, the market is categorized into North America, Europe, Asia Pacific, Latin America, and the Middle East and Africa.

Key Players Covered: 

• BASF SE
• INEOS
• TPC Group
• Lubrizol
• Kothari Petrochemical
• Daelim Industrial Company Ltd
• ExxonMobil
• Lanxess
• Others

Key Insights

The polyisobutylene report will cover the following key insights:

• Key Emerging Trends – For Major Regions
• Key Developments: Mergers, Acquisitions, Partnerships, and Others
• Latest Technological Advancement
• Regulatory Landscape
• Porters Five Forces Analysis
• Impact of COVID-19 on the Market

Regional Analysis:

The polyisobutylene industry has been segmented into North America, Europe, Asia Pacific, Latin America, and Middle East & Africa.  Europe was the largest market for polyisobutylene in 2015 with almost 43 % of share in global market by volume. It is expected to continue its dominance due to high demand for PIB from automotive sector. Asia Pacific is estimated to be one of the key market due to the rapid industrialization and improvement in the economic conditions.  North America is expected to show considerable growth due to increasing demand for industrial sealants and adhesives. Latin America & Middle East & Africa shall exhibit sluggish growth by the end of forecast period.

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Segmentation

Polyisobutylene Industry Developments

• In January 2018, BASF Petronas chemicals set up a new manufacturing facility for highly reactive polyisobutylene in Kuantan, Malaysia. The facility has manufacturing capacity of 50000 tons per year at its integrated site in Gebang.
• In May 2015, BASF acquired the polyisobutylene business of Lanxess AG. The acquisition consists mainly of intellectual property for a new and innovative technology to manufacture polyisobutylene.