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
Gradeslate Product data sheet Share this page Contact us

Products

  • ExxonMobil Chemical Page

    Exxon™ chlorobutyl rubber

    Discover technical details and specifications for chlorobutyl rubber product grades.

    View data sheets

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.
  • ExxonMobil Chemical Library icon

    Rubber & Plastics News

    Read Kurt Aerts interview in Rubber & Plastics News and learn how the company has been at the forefront of rubber and elastomer innovation from the very beginning.

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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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    Video: Air retention

    We keep the air in your tires and the good times rolling.

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  • 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

    Sustained commitment: Supply, innovation, technology and quality

    An interview with Kurt Aerts, Vice President, Global Specialty Elastomers and Butyl, ExxonMobil.

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  • ExxonMobil Chemical share button icon

    Pioneers of innovation: The fathers of synthetic rubber

    Read how these pioneers have opened doors to further learning and exploration in their fields and beyond.

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