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In 2023–2024, the leading exporters of butyl rubber were the United States, Germany, and South Korea, collectively accounting for over 50% of global export value; major importers included China, India, and Mexico, reflecting strong demand from tire manufacturing and pharmaceutical packaging sectors. Butyl rubber prices have remained relatively stable amid steady export volumes from top suppliers, though import growth accelerated in Southeast Asia and India, signaling expanding downstream industrial capacity.
Butyl rubber is a synthetic elastomer appearing as a tough, amorphous, off-white to light brown solid at room temperature, with no significant odor and negligible volatility. It is a copolymer of isobutylene with a small amount (1–3%) of isoprene, classified as a halogen-free saturated hydrocarbon polymer. Primarily valued for its low gas permeability, excellent aging and ozone resistance, and good damping properties, it is used predominantly in tire innerliners, tubeless tire bladders, and specialty seals. Key application areas include automotive components, pharmaceutical stoppers, vibration-damping materials, and protective linings for chemical storage tanks and hoses.
Butyl rubber is formed from the polymerization of isobutene (isobutylene) with small amounts of chloroprene, isoprene, or butadiene and may be halogenated. The reaction is carried out in a closed system with an aluminum chloride catalyst. Butyl rubber is highly impervious to gases, which makes it the rubber best suited for inner tubes and tires, air chambers, adhesives, and dielectrics. Isobutene is an anesthetic and asphyxiant gas and can be hazardous in concentrations high enough to produce asphyxia. At these concentrations, explosion is an additional hazard.
Viscosity controlling agent.
This chemical is included in Rubber. See more about what is butyl rubber and butyl rubber SDS information.
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