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![Rack of tires made with Chlorobutyl]( "Rack of tires made with Chlorobutyl")
Chlorobutyl rubber
Exxon™ chlorobutyl rubber is an isobutylene-isoprene copolymer derived from reacting butyl rubber with chlorine in a continuous process. It is structurally similar to Exxon™ bromobutyl rubber and produced through the same halogenation process.
Our chlorobutyl gradeslate offers a range of polymer viscosities and cure responses through adjustments in functionality and additives content. Compared with regular butyl rubber, Exxon chlorobutyl rubber provides an improved compression set and better resistance to heat, ozone and flex fatigue.
Benefits
- Low permeability to air, gases and moisture
- Vibration damping
- Low glass transition temperature, similar to regular butyl
- Wide vulcanization versatility
- Fast cure rates
- Processing safety: no nitrosamines or nitrosamines precursors
- Good adhesion and compatibility to other rubbers
Products
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![ExxonMobil Chemical Page]( "ExxonMobil Chemical Page")
Exxon™ chlorobutyl rubber
Discover technical details and specifications for chlorobutyl rubber product grades.
View data sheets
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Tire innerliners – the key to air retention
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 tire performance
Innerliners made with Exxpro™ specialty elastomer keep air in the tires longer and boost vehicle performance.
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![Butyl Inner Tube Liner graphic]( "Butyl Inner Tube Liner graphic")
Why 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.
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Industries and applications
Featured resources
View highlighted news, events, technical papers and case studies below. To see our full collection of resources, browse our
Library.
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![ExxonMobil Chemical Library icon]( "ExxonMobil Chemical Library icon")
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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![ExxonMobil Chemical play button icon]( "ExxonMobil Chemical play button icon")
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.
Watch the video
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![ExxonMobil Chemical play button icon]( "ExxonMobil Chemical play button icon")
Video: Air retention
We keep the air in your tires and the good times rolling.
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![ExxonMobil Chemical Library icon]( "ExxonMobil Chemical Library icon")
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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![ExxonMobil Chemical Library icon]( "ExxonMobil Chemical Library icon")
Sustained commitment: Supply, innovation, technology and quality
An interview with Kurt Aerts, Vice President, Global Specialty Elastomers and Butyl, ExxonMobil.
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