Rubber composition for tire

Rubber composition for tire

  • CN 106,062,064 B
  • Filed: 02/19/2015
  • Issued: 02/02/2021
  • Est. Priority Date: 03/31/2014
  • Status: Active Grant
First Claim
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1. A rubber composition for a tire, comprising a polybutadiene (I) and another rubber (II) and a rubber reinforcing material (IV), wherein the polybutadiene (I) satisfies the condition:

  • (A) mooney viscosity (ML) measured at 100 ℃

    according to JIS-K63001+4,100℃

    ) In the range of 43 to 70 f,(B) a toluene solution viscosity (Tcp) of 5% by weight and a Mooney viscosity (ML) measured at 100 ℃

    in accordance with JIS-K63001+4,100℃

    ) Ratio of (Tcp/ML)1+4,100℃

    ) In the range of 0.9 to 1.4,(C)ML1+4,100℃

    determination of the Torque at the endThe stress relaxation time (T80) when the value is reduced by 80% is 12.0 to 20.0 seconds as 100%,(D) a molecular weight distribution (Mw/Mn) of 2.50 to 4.00, and(G) the number average molecular weight (Mn) is 16.6X 104

    30.0×

    104

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