butyl rubber definition

  • noun:
    • A synthetic rubber created by copolymerization of a butylene with isoprene, nearly impermeable to atmosphere and used in tires, internal tubes, and insulation.
    • A synthetic rubber produced by the polymerization of isobutene and isoprene
    • artificial plastic made by polymerizing isobutylene

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  • Hypernym for "butyl rubber"
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