Butyl rubber
Exxon™ butyl rubber is the foundation of today’s butyl rubber technology. Butyl rubber is a copolymer of isobutylene and a small amount of isoprene, providing for a highly saturated backbone. The primary properties of butyl rubber are excellent air-barrier performance, good flex fatigue and vibration damping. From innertubes to curing bladders, butyl properties are valued across a range of rubber products.
Benefits
- Low permeability to air, gases and moisture
- Vibration damping
- Low glass transition temperature
- Low modulus elastomer
- Low compression set
- Resistance to aging and to weathering from atmospheric exposure
- Wide vulcanization versatility
- Fast cure rates
- Processing safety: no nitrosamines or nitrosamines precursors
- Broad range of durometer and tensile strength properties
- Low filler content for specific gravity, cost-effective compounding
Products
Exxon™ butyl rubber
Discover technical details and specifications for butyl rubber product grades.
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How can air increase an Electric Vehicle’s range?
Electric vehicles with underinflated tires lose battery range, so retaining air is key. Learn about an existing easy solution.
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Boost your tires for the new mobility
Lower permeability than regular halobutyl polymers, making it perfect for tire innerliner applications to achieve better tire and vehicle performance.
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Air retention matters!
Learn more about ExxonMobil Chemical’s butyl rubber products and how tires with halobutyl innerliners maintain proper tire pressure, and better air retention brings better performance.
Industries and applications
Featured resources
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Gradeslate: 80 years of leadership in butyl technology
Reference the list of ExxonMobil Chemical’s butyl rubber gradeslate, including grades and typical applications.
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Video: Proper air retention can make all the difference
It’s the everyday moments that can easily go from simple to complex, good to bad, or economical to expensive – simply due to tire inflation. ExxonMobil halobutyl tire innerliners help to keep the air in your tires.
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Airing a problem with tire safety and performance
Jeffrey Valentage, Global Tire Market Development Manager at ExxonMobil Chemical, explores an often neglected element that ensures the long-term safety and performance of tires. This article is available in English only.
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Sustained commitment: Supply, innovation, technology and quality
An interview with Kurt Aerts, Vice President, Global Specialty Elastomers and Butyl, ExxonMobil.