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Runflat tire

  • US 7,789,119 B2
  • Filed: 07/25/2007
  • Issued: 09/07/2010
  • Est. Priority Date: 10/10/2006
  • Status: Expired due to Fees
First Claim
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1. A pneumatic runflat tire comprising at least one sidewall insert, the at least one sidewall insert comprising a heterogenous rubber compound comprising first rubber and second rubber composition phases, wherein the second rubber phase is further vulcanizable;

  • whereinthe first rubber composition comprises 100 parts by weight of an elastomer comprising from 70 to 90 parts by weight of natural rubber or synthetic polyisoprene, and from 10 to 30 parts by weight of cis-1,4-polybutadiene; and

    the second rubber composition comprises 100 parts by weight of natural rubber or synthetic polyisoprene, and from 2 to 8 parts by weight of 1,3-bis(citraconimidomethyl)benzene.

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