ExxonMobil branded Tire

Bromobutyl  

Exxon™ bromobutyl rubber is derived from halogenating butyl rubber with bromine in a continuous process. It is structurally similar to Exxon™ chlorobutyl rubber and produced through the same halogenation process.

Our bromobutyl rubber gradeslate offers a range of polymer viscosities and cure responses, reflecting adjustments in functionality and additives content. Compared with regular butyl rubber, Exxon bromobutyl rubber provides faster and more stable cure through carbon-carbon linking.

Benefits

  • Low permeability to air, gases and moisture
  • Low glass transition temperature similar to regular butyl
  • Wide vulcanization versatility
  • Fast cure rates
  • Processing safety: no nitrosamines or nitrosamines precursors

Products

  • ExxonMobil Chemical Page

    Exxon™ bromobutyl rubber

    Discover technical details and specifications for bromobutyl rubber product grades.

    View data sheets
  • multiple blue ev cars

    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.

    Learn more
  • exxpro blue car arch

    Boost your tire performance

    Innerliners made with Exxpro™ specialty elastomer keep air in the tires longer and boost vehicle performance.

    Learn more
  • 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.

    Learn more

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

    Gradeslate: 80 years of leadership in butyl technology

    Reference the list of ExxonMobil Chemical’s butyl rubber gradeslate, including grades and typical applications.

    Read more
  • ExxonMobil Chemical play button icon

    Video: Air retention

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

    Watch the video
  • 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.

    Read more
  • ExxonMobil Chemical Library icon

    Sustained commitment: Supply, innovation, technology and quality

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

    Read more
  • 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.

    Read more
Don’t see what you’re looking for? Check out Quick links to explore additional content.
Loading