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Tire Applications
The tire is a high performance composite made of many rubber components reinforced by textile and/or steel cords. Butyl polymers are used in several of these components, including the innerliner, non-staining black sidewall, white sidewall, white sidewall coverstrip and are being evaluated in tread compounds. Butyl polymers' barrier properties, high damping and resistance to ozone make them ideal for these applications.
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The following Exxon products can be used in tire applications:
EXXON Butyl
EXXON Bromobutyl
EXXON Chlorobutyl
EXXON Star-branched Butyls
Exxpro specialty elastomers
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Halobutyl is a generic term that describes a family of halogenated butyl rubber products. Chlorination and bromination of the butyl polymer backbone results in chlorobutyl and bromobutyl polymers that can be co-vulcanized with other highly unsaturated rubbers for tire and other applications.
The ability of halobutyl elastomers to be vulcanized with other rubbers, along with their unique properties, such as low permeability, high heat resistance, excellent flex cracking resistance, and processability, make them valuable in tire applications. The superior moisture vapor barrier properties of a halobutyl innerliner prevents the rusting of steel cords in the belts and carcass of passenger and truck tires.
Innerliners made from EXXON Halobutyl polymers provide the greatest inflation pressure retention possible. Properly inflated tires are critical to optimum vehicle safety and performance. Additional information on how halobutyl elastomers can be used in tire innerliners to boost tire safety can be found on this website.
Blends of EXXON Chlorobutyl or Exxpro specialty elastomers with other elastomers are used in several different sidewall applications, and impart excellent ozone and flex cracking resistance, as well as non-staining characteristics.
Butyl polymers' heat and ozone resistance makes them excellent candidates for use in tire-related applications. Unhalogenated butyl commonly called "regular butyl," is used in new tire manufacturing for curing bladders, products that help mold and cure tires. The tire retread industry utilizes curing envelopes which are often produced from regular butyl or chlorobutyl to help cure new tire tread to used carcasses.
One of the early applications for butyl polymers, inner tubes, still utilize regular butyl and chlorobutyl to provide maximum inflation pressure retention for truck, agricultural, industrial and specialty tires.
EXXON Butyl Inner Tubes Brochure (English)
EXXON Butyl Inner Tubes Brochure (Chinese)
For additional information about our polymers, please contact us at 1-800-231-6633 or 281-870-6000.
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